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On this page are computer-accessible forms for the graph C4[ 505, 3 ] = C_505(1,212).

(I) Following is a form readable by MAGMA:

g:=Graph<505|{ {2, 3}, {504, 505}, {502, 503}, {500, 501}, {498, 499}, {496, 497}, {494, 495}, {492, 493}, {490, 491}, {488, 489}, {486, 487}, {484, 485}, {482, 483}, {480, 481}, {478, 479}, {476, 477}, {474, 475}, {472, 473}, {470, 471}, {468, 469}, {466, 467}, {464, 465}, {462, 463}, {460, 461}, {458, 459}, {456, 457}, {454, 455}, {452, 453}, {450, 451}, {448, 449}, {446, 447}, {444, 445}, {442, 443}, {440, 441}, {438, 439}, {436, 437}, {434, 435}, {432, 433}, {430, 431}, {428, 429}, {426, 427}, {424, 425}, {422, 423}, {420, 421}, {418, 419}, {416, 417}, {414, 415}, {412, 413}, {410, 411}, {408, 409}, {406, 407}, {404, 405}, {402, 403}, {400, 401}, {398, 399}, {396, 397}, {394, 395}, {392, 393}, {390, 391}, {388, 389}, {386, 387}, {384, 385}, {382, 383}, {380, 381}, {378, 379}, {376, 377}, {374, 375}, {372, 373}, {370, 371}, {368, 369}, {366, 367}, {364, 365}, {362, 363}, {360, 361}, {358, 359}, {356, 357}, {354, 355}, {352, 353}, {350, 351}, {348, 349}, {346, 347}, {344, 345}, {342, 343}, {340, 341}, {338, 339}, {336, 337}, {334, 335}, {332, 333}, {330, 331}, {328, 329}, {326, 327}, {324, 325}, {322, 323}, {320, 321}, {318, 319}, {316, 317}, {314, 315}, {312, 313}, {310, 311}, {308, 309}, {306, 307}, {304, 305}, {302, 303}, {300, 301}, {298, 299}, {296, 297}, {294, 295}, {292, 293}, {290, 291}, {288, 289}, {286, 287}, {284, 285}, {154, 155}, {152, 153}, {150, 151}, {148, 149}, {146, 147}, {144, 145}, {142, 143}, {140, 141}, {138, 139}, {136, 137}, {134, 135}, {132, 133}, {130, 131}, {128, 129}, {126, 127}, {124, 125}, {122, 123}, {120, 121}, {118, 119}, {116, 117}, {114, 115}, {112, 113}, {110, 111}, {108, 109}, {106, 107}, {104, 105}, {102, 103}, {100, 101}, {98, 99}, {96, 97}, {94, 95}, {92, 93}, {4, 5}, {6, 7}, {8, 9}, {10, 11}, {12, 13}, {14, 15}, {16, 17}, {18, 19}, {20, 21}, {22, 23}, {24, 25}, {26, 27}, {28, 29}, {30, 31}, {32, 33}, {34, 35}, {36, 37}, {38, 39}, {40, 41}, {42, 43}, {44, 45}, {46, 47}, {48, 49}, {50, 51}, {52, 53}, {54, 55}, {56, 57}, {58, 59}, {60, 61}, {62, 63}, {64, 65}, {66, 67}, {68, 69}, {70, 71}, {72, 73}, {74, 75}, {76, 77}, {78, 79}, {80, 81}, {82, 83}, {84, 85}, {86, 87}, {88, 89}, {90, 91}, {156, 157}, {158, 159}, {160, 161}, {162, 163}, {164, 165}, {166, 167}, {168, 169}, {170, 171}, {172, 173}, {174, 175}, {176, 177}, {178, 179}, {180, 181}, {182, 183}, {184, 185}, {186, 187}, {188, 189}, {190, 191}, {192, 193}, {194, 195}, {196, 197}, {198, 199}, {200, 201}, {202, 203}, {204, 205}, {206, 207}, {208, 209}, {210, 211}, {212, 213}, {214, 215}, {216, 217}, {218, 219}, {220, 221}, {222, 223}, {224, 225}, {226, 227}, {228, 229}, {230, 231}, {232, 233}, {234, 235}, {236, 237}, {238, 239}, {240, 241}, {242, 243}, {244, 245}, {246, 247}, {248, 249}, {250, 251}, {252, 253}, {254, 255}, {256, 257}, {258, 259}, {260, 261}, {262, 263}, {264, 265}, {266, 267}, {268, 269}, {270, 271}, {272, 273}, {274, 275}, {276, 277}, {278, 279}, {280, 281}, {282, 283}, {1, 2}, {501, 502}, {497, 498}, {493, 494}, {489, 490}, {485, 486}, {481, 482}, {477, 478}, {473, 474}, {469, 470}, {465, 466}, {461, 462}, {457, 458}, {453, 454}, {449, 450}, {445, 446}, {441, 442}, {437, 438}, {433, 434}, {429, 430}, {425, 426}, {421, 422}, {417, 418}, {413, 414}, {409, 410}, {405, 406}, {401, 402}, {397, 398}, {393, 394}, {389, 390}, {385, 386}, {381, 382}, {377, 378}, {373, 374}, {369, 370}, {365, 366}, {361, 362}, {357, 358}, {353, 354}, {349, 350}, {345, 346}, {341, 342}, {337, 338}, {333, 334}, {329, 330}, {325, 326}, {321, 322}, {317, 318}, {313, 314}, {309, 310}, {305, 306}, {301, 302}, {297, 298}, {293, 294}, {289, 290}, {285, 286}, {153, 154}, {149, 150}, {145, 146}, {141, 142}, {137, 138}, {133, 134}, {129, 130}, {125, 126}, {121, 122}, {117, 118}, {113, 114}, {109, 110}, {105, 106}, {101, 102}, {97, 98}, {93, 94}, {5, 6}, {9, 10}, {13, 14}, {17, 18}, {21, 22}, {25, 26}, {29, 30}, {33, 34}, {37, 38}, {41, 42}, {45, 46}, {49, 50}, {53, 54}, {57, 58}, {61, 62}, {65, 66}, {69, 70}, {73, 74}, {77, 78}, {81, 82}, {85, 86}, {89, 90}, {157, 158}, {161, 162}, {165, 166}, {169, 170}, {173, 174}, {177, 178}, {181, 182}, {185, 186}, {189, 190}, {193, 194}, {197, 198}, {201, 202}, {205, 206}, {209, 210}, {213, 214}, {217, 218}, {221, 222}, {225, 226}, {229, 230}, {233, 234}, {237, 238}, {241, 242}, {245, 246}, {249, 250}, {253, 254}, {257, 258}, {261, 262}, {265, 266}, {269, 270}, {273, 274}, {277, 278}, {281, 282}, {3, 4}, {499, 500}, {491, 492}, {483, 484}, {475, 476}, {467, 468}, {459, 460}, {451, 452}, {443, 444}, {435, 436}, {427, 428}, {419, 420}, {411, 412}, {403, 404}, {395, 396}, {387, 388}, {379, 380}, {371, 372}, {363, 364}, {355, 356}, {347, 348}, {339, 340}, {331, 332}, {323, 324}, {315, 316}, {307, 308}, {299, 300}, {291, 292}, {155, 156}, {147, 148}, {139, 140}, {131, 132}, {123, 124}, {115, 116}, {107, 108}, {99, 100}, {91, 92}, {11, 12}, {19, 20}, {27, 28}, {35, 36}, {43, 44}, {51, 52}, {59, 60}, {67, 68}, {75, 76}, {83, 84}, {163, 164}, {171, 172}, {179, 180}, {187, 188}, {195, 196}, {203, 204}, {211, 212}, {219, 220}, {227, 228}, {235, 236}, {243, 244}, {251, 252}, {259, 260}, {267, 268}, {275, 276}, {283, 284}, {7, 8}, {503, 504}, {487, 488}, {471, 472}, {455, 456}, {439, 440}, {423, 424}, {407, 408}, {391, 392}, {375, 376}, {359, 360}, {343, 344}, {327, 328}, {311, 312}, {295, 296}, {151, 152}, {135, 136}, {119, 120}, {103, 104}, {23, 24}, {39, 40}, {55, 56}, {71, 72}, {87, 88}, {167, 168}, {183, 184}, {199, 200}, {215, 216}, {231, 232}, {247, 248}, {263, 264}, {279, 280}, {15, 16}, {495, 496}, {463, 464}, {431, 432}, {399, 400}, {367, 368}, {335, 336}, {303, 304}, {143, 144}, {111, 112}, {47, 48}, {79, 80}, {175, 176}, {207, 208}, {239, 240}, {271, 272}, {31, 32}, {479, 480}, {415, 416}, {351, 352}, {287, 288}, {95, 96}, {159, 160}, {223, 224}, {63, 64}, {447, 448}, {319, 320}, {191, 192}, {1, 213}, {291, 503}, {290, 502}, {289, 501}, {288, 500}, {2, 214}, {3, 215}, {8, 220}, {9, 221}, {10, 222}, {11, 223}, {32, 244}, {33, 245}, {34, 246}, {35, 247}, {40, 252}, {41, 253}, {42, 254}, {43, 255}, {256, 468}, {257, 469}, {258, 470}, {259, 471}, {264, 476}, {265, 477}, {266, 478}, {267, 479}, {4, 216}, {293, 505}, {292, 504}, {5, 217}, {6, 218}, {7, 219}, {36, 248}, {37, 249}, {38, 250}, {39, 251}, {260, 472}, {261, 473}, {262, 474}, {263, 475}, {12, 224}, {287, 499}, {286, 498}, {285, 497}, {284, 496}, {13, 225}, {14, 226}, {15, 227}, {28, 240}, {29, 241}, {30, 242}, {31, 243}, {268, 480}, {269, 481}, {270, 482}, {271, 483}, {16, 228}, {283, 495}, {17, 229}, {18, 230}, {19, 231}, {24, 236}, {25, 237}, {26, 238}, {27, 239}, {272, 484}, {273, 485}, {274, 486}, {275, 487}, {280, 492}, {281, 493}, {282, 494}, {20, 232}, {21, 233}, {22, 234}, {23, 235}, {276, 488}, {277, 489}, {278, 490}, {279, 491}, {127, 128}, {383, 384}, {2, 295}, {154, 447}, {152, 445}, {146, 439}, {144, 437}, {138, 431}, {136, 429}, {130, 423}, {128, 421}, {90, 383}, {8, 301}, {10, 303}, {16, 309}, {18, 311}, {24, 317}, {26, 319}, {64, 357}, {66, 359}, {72, 365}, {74, 367}, {80, 373}, {82, 375}, {88, 381}, {192, 485}, {194, 487}, {200, 493}, {202, 495}, {208, 501}, {210, 503}, {1, 294}, {153, 446}, {145, 438}, {137, 430}, {129, 422}, {9, 302}, {17, 310}, {25, 318}, {65, 358}, {73, 366}, {81, 374}, {89, 382}, {193, 486}, {201, 494}, {209, 502}, {3, 296}, {151, 444}, {147, 440}, {135, 428}, {131, 424}, {7, 300}, {19, 312}, {23, 316}, {67, 360}, {71, 364}, {83, 376}, {87, 380}, {195, 488}, {199, 492}, {211, 504}, {44, 256}, {127, 339}, {126, 338}, {125, 337}, {124, 336}, {111, 323}, {110, 322}, {109, 321}, {108, 320}, {45, 257}, {46, 258}, {47, 259}, {60, 272}, {61, 273}, {62, 274}, {63, 275}, {172, 384}, {173, 385}, {174, 386}, {175, 387}, {188, 400}, {189, 401}, {190, 402}, {191, 403}, {236, 448}, {237, 449}, {238, 450}, {239, 451}, {252, 464}, {253, 465}, {254, 466}, {255, 467}, {4, 297}, {150, 443}, {148, 441}, {134, 427}, {132, 425}, {6, 299}, {20, 313}, {22, 315}, {68, 361}, {70, 363}, {84, 377}, {86, 379}, {196, 489}, {198, 491}, {212, 505}, {5, 298}, {149, 442}, {133, 426}, {21, 314}, {69, 362}, {85, 378}, {197, 490}, {48, 260}, {123, 335}, {122, 334}, {121, 333}, {120, 332}, {115, 327}, {114, 326}, {113, 325}, {112, 324}, {49, 261}, {50, 262}, {51, 263}, {56, 268}, {57, 269}, {58, 270}, {59, 271}, {176, 388}, {177, 389}, {178, 390}, {179, 391}, {184, 396}, {185, 397}, {186, 398}, {187, 399}, {240, 452}, {241, 453}, {242, 454}, {243, 455}, {248, 460}, {249, 461}, {250, 462}, {251, 463}, {11, 304}, {143, 436}, {139, 432}, {15, 308}, {75, 368}, {79, 372}, {203, 496}, {207, 500}, {52, 264}, {119, 331}, {118, 330}, {117, 329}, {116, 328}, {53, 265}, {54, 266}, {55, 267}, {180, 392}, {181, 393}, {182, 394}, {183, 395}, {244, 456}, {245, 457}, {246, 458}, {247, 459}, {12, 305}, {142, 435}, {140, 433}, {14, 307}, {76, 369}, {78, 371}, {204, 497}, {206, 499}, {13, 306}, {141, 434}, {77, 370}, {205, 498}, {64, 276}, {107, 319}, {106, 318}, {105, 317}, {104, 316}, {99, 311}, {98, 310}, {97, 309}, {96, 308}, {65, 277}, {66, 278}, {67, 279}, {72, 284}, {73, 285}, {74, 286}, {75, 287}, {192, 404}, {193, 405}, {194, 406}, {195, 407}, {200, 412}, {201, 413}, {202, 414}, {203, 415}, {224, 436}, {225, 437}, {226, 438}, {227, 439}, {232, 444}, {233, 445}, {234, 446}, {235, 447}, {27, 320}, {31, 324}, {59, 352}, {63, 356}, {155, 448}, {159, 452}, {187, 480}, {191, 484}, {68, 280}, {103, 315}, {102, 314}, {101, 313}, {100, 312}, {69, 281}, {70, 282}, {71, 283}, {196, 408}, {197, 409}, {198, 410}, {199, 411}, {228, 440}, {229, 441}, {230, 442}, {231, 443}, {28, 321}, {30, 323}, {60, 353}, {62, 355}, {156, 449}, {158, 451}, {188, 481}, {190, 483}, {29, 322}, {61, 354}, {157, 450}, {189, 482}, {32, 325}, {34, 327}, {40, 333}, {42, 335}, {48, 341}, {50, 343}, {56, 349}, {58, 351}, {160, 453}, {162, 455}, {168, 461}, {170, 463}, {176, 469}, {178, 471}, {184, 477}, {186, 479}, {33, 326}, {41, 334}, {49, 342}, {57, 350}, {161, 454}, {169, 462}, {177, 470}, {185, 478}, {35, 328}, {39, 332}, {51, 344}, {55, 348}, {163, 456}, {167, 460}, {179, 472}, {183, 476}, {76, 288}, {95, 307}, {94, 306}, {93, 305}, {92, 304}, {77, 289}, {78, 290}, {79, 291}, {204, 416}, {205, 417}, {206, 418}, {207, 419}, {220, 432}, {221, 433}, {222, 434}, {223, 435}, {36, 329}, {38, 331}, {52, 345}, {54, 347}, {164, 457}, {166, 459}, {180, 473}, {182, 475}, {37, 330}, {53, 346}, {165, 458}, {181, 474}, {80, 292}, {91, 303}, {81, 293}, {82, 294}, {83, 295}, {88, 300}, {89, 301}, {90, 302}, {208, 420}, {209, 421}, {210, 422}, {211, 423}, {216, 428}, {217, 429}, {218, 430}, {219, 431}, {43, 336}, {47, 340}, {171, 464}, {175, 468}, {84, 296}, {85, 297}, {86, 298}, {87, 299}, {212, 424}, {213, 425}, {214, 426}, {215, 427}, {44, 337}, {46, 339}, {172, 465}, {174, 467}, {45, 338}, {173, 466}, {128, 340}, {139, 351}, {138, 350}, {137, 349}, {136, 348}, {131, 343}, {130, 342}, {129, 341}, {160, 372}, {161, 373}, {162, 374}, {163, 375}, {168, 380}, {169, 381}, {170, 382}, {171, 383}, {91, 384}, {127, 420}, {123, 416}, {95, 388}, {132, 344}, {135, 347}, {134, 346}, {133, 345}, {164, 376}, {165, 377}, {166, 378}, {167, 379}, {92, 385}, {126, 419}, {124, 417}, {94, 387}, {93, 386}, {125, 418}, {96, 389}, {122, 415}, {120, 413}, {114, 407}, {112, 405}, {106, 399}, {104, 397}, {98, 391}, {97, 390}, {121, 414}, {113, 406}, {105, 398}, {99, 392}, {119, 412}, {115, 408}, {103, 396}, {140, 352}, {143, 355}, {142, 354}, {141, 353}, {156, 368}, {157, 369}, {158, 370}, {159, 371}, {100, 393}, {118, 411}, {116, 409}, {102, 395}, {101, 394}, {117, 410}, {144, 356}, {154, 366}, {153, 365}, {152, 364}, {147, 359}, {146, 358}, {145, 357}, {155, 367}, {1, 505}, {107, 400}, {111, 404}, {148, 360}, {151, 363}, {150, 362}, {149, 361}, {108, 401}, {110, 403}, {109, 402}, {255, 256} }>;

(II) A more general form is to represent the graph as the orbit of {2, 3} under the group generated by the following permutations:

a: (2, 213, 505, 294)(3, 425, 504, 82)(4, 132, 503, 375)(5, 344, 502, 163)(6, 51, 501, 456)(7, 263, 500, 244)(8, 475, 499, 32)(9, 182, 498, 325)(10, 394, 497, 113)(11, 101, 496, 406)(12, 313, 495, 194)(13, 20, 494, 487)(14, 232, 493, 275)(15, 444, 492, 63)(16, 151, 491, 356)(17, 363, 490, 144)(18, 70, 489, 437)(19, 282, 488, 225)(21, 201, 486, 306)(22, 413, 485, 94)(23, 120, 484, 387)(24, 332, 483, 175)(25, 39, 482, 468)(26, 251, 481, 256)(27, 463, 480, 44)(28, 170, 479, 337)(29, 382, 478, 125)(30, 89, 477, 418)(31, 301, 476, 206)(33, 220, 474, 287)(34, 432, 473, 75)(35, 139, 472, 368)(36, 351, 471, 156)(37, 58, 470, 449)(38, 270, 469, 237)(40, 189, 467, 318)(41, 401, 466, 106)(42, 108, 465, 399)(43, 320, 464, 187)(45, 239, 462, 268)(46, 451, 461, 56)(47, 158, 460, 349)(48, 370, 459, 137)(49, 77, 458, 430)(50, 289, 457, 218)(52, 208, 455, 299)(53, 420, 454, 87)(54, 127, 453, 380)(55, 339, 452, 168)(57, 258, 450, 249)(59, 177, 448, 330)(60, 389, 447, 118)(61, 96, 446, 411)(62, 308, 445, 199)(64, 227, 443, 280)(65, 439, 442, 68)(66, 146, 441, 361)(67, 358, 440, 149)(69, 277, 438, 230)(71, 196, 436, 311)(72, 408, 435, 99)(73, 115, 434, 392)(74, 327, 433, 180)(76, 246, 431, 261)(78, 165, 429, 342)(79, 377, 428, 130)(80, 84, 427, 423)(81, 296, 426, 211)(83, 215, 424, 292)(85, 134, 422, 373)(86, 346, 421, 161)(88, 265, 419, 242)(90, 184, 417, 323)(91, 396, 416, 111)(92, 103, 415, 404)(93, 315, 414, 192)(95, 234, 412, 273)(97, 153, 410, 354)(98, 365, 409, 142)(100, 284, 407, 223)(102, 203, 405, 304)(104, 122, 403, 385)(105, 334, 402, 173)(107, 253, 400, 254)(109, 172, 398, 335)(110, 384, 397, 123)(112, 303, 395, 204)(114, 222, 393, 285)(116, 141, 391, 366)(117, 353, 390, 154)(119, 272, 388, 235)(121, 191, 386, 316)(124, 322, 383, 185)(126, 241, 381, 266)(128, 160, 379, 347)(129, 372, 378, 135)(131, 291, 376, 216)(133, 210, 374, 297)(136, 341, 371, 166)(138, 260, 369, 247)(140, 179, 367, 328)(143, 310, 364, 197)(145, 229, 362, 278)(147, 148, 360, 359)(150, 279, 357, 228)(152, 198, 355, 309)(155, 329, 352, 178)(157, 248, 350, 259)(159, 167, 348, 340)(162, 298, 345, 209)(164, 217, 343, 290)(169, 267, 338, 240)(171, 186, 336, 321)(174, 317, 333, 190)(176, 236, 331, 271)(181, 286, 326, 221)(183, 205, 324, 302)(188, 255, 319, 252)(193, 305, 314, 202)(195, 224, 312, 283)(200, 274, 307, 233)(207, 243, 300, 264)(212, 293, 295, 214)(219, 262, 288, 245)(226, 231, 281, 276)(238, 250, 269, 257)
b: (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 347, 348, 349, 350, 351, 352, 353, 354, 355, 356, 357, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384, 385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398, 399, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440, 441, 442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456, 457, 458, 459, 460, 461, 462, 463, 464, 465, 466, 467, 468, 469, 470, 471, 472, 473, 474, 475, 476, 477, 478, 479, 480, 481, 482, 483, 484, 485, 486, 487, 488, 489, 490, 491, 492, 493, 494, 495, 496, 497, 498, 499, 500, 501, 502, 503, 504, 505)

(III) Last is Groups&Graphs. Copy everything between (not including) the lines of asterisks into a plain text file and save it as "graph.txt". Then launch G&G (Groups&Graphs) and select Read Text from the File menu.

**************

&Graph
C4[ 505, 3 ]
505
-1 2 213 294 505
-2 1 3 214 295
-3 2 4 215 296
-4 297 3 5 216
-5 298 4 6 217
-6 299 5 7 218
-7 300 6 8 219
-8 220 301 7 9
-9 221 302 8 10
-10 11 222 303 9
-11 12 223 304 10
-12 11 13 224 305
-13 12 14 225 306
-14 13 15 226 307
-15 308 14 16 227
-16 309 15 17 228
-17 310 16 18 229
-18 311 17 19 230
-19 231 312 18 20
-20 232 313 19 21
-21 22 233 314 20
-22 23 234 315 21
-23 22 24 235 316
-24 23 25 236 317
-25 24 26 237 318
-26 319 25 27 238
-27 320 26 28 239
-28 321 27 29 240
-29 322 28 30 241
-30 242 323 29 31
-31 243 324 30 32
-32 33 244 325 31
-33 34 245 326 32
-34 33 35 246 327
-35 34 36 247 328
-36 35 37 248 329
-37 330 36 38 249
-38 331 37 39 250
-39 332 38 40 251
-40 333 39 41 252
-41 253 334 40 42
-42 254 335 41 43
-43 44 255 336 42
-44 45 256 337 43
-45 44 46 257 338
-46 45 47 258 339
-47 46 48 259 340
-48 341 47 49 260
-49 342 48 50 261
-50 343 49 51 262
-51 344 50 52 263
-52 264 345 51 53
-53 265 346 52 54
-54 55 266 347 53
-55 56 267 348 54
-56 55 57 268 349
-57 56 58 269 350
-58 57 59 270 351
-59 352 58 60 271
-60 353 59 61 272
-61 354 60 62 273
-62 355 61 63 274
-63 275 356 62 64
-64 276 357 63 65
-65 66 277 358 64
-66 67 278 359 65
-67 66 68 279 360
-68 67 69 280 361
-69 68 70 281 362
-70 363 69 71 282
-71 364 70 72 283
-72 365 71 73 284
-73 366 72 74 285
-74 286 367 73 75
-75 287 368 74 76
-76 77 288 369 75
-77 78 289 370 76
-78 77 79 290 371
-79 78 80 291 372
-80 79 81 292 373
-81 374 80 82 293
-82 375 81 83 294
-83 376 82 84 295
-84 377 83 85 296
-85 297 378 84 86
-86 298 379 85 87
-87 88 299 380 86
-88 89 300 381 87
-89 88 90 301 382
-90 89 91 302 383
-91 90 92 303 384
-92 385 91 93 304
-93 386 92 94 305
-94 387 93 95 306
-95 388 94 96 307
-96 308 389 95 97
-97 309 390 96 98
-98 99 310 391 97
-99 100 311 392 98
-100 99 101 312 393
-101 100 102 313 394
-102 101 103 314 395
-103 396 102 104 315
-104 397 103 105 316
-105 398 104 106 317
-106 399 105 107 318
-107 319 400 106 108
-108 320 401 107 109
-109 110 321 402 108
-110 111 322 403 109
-111 110 112 323 404
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0

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