id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A025118
[ 3, 4, 18, 26, 57, 70, 129, 148, 244, 281, 413, 462, 649, 722, 960, 1048, 1356, 1462, 1848, 1990, 2447, 2609, 3163, 3346, 4006, 4237, 4987, 5246, 6117, 6429, 7407, 7748, 8866, 9242, 10505, 10947, 12335, 12814, 14368, 14916, 16611, 17201, 19074, 19709, 21769, 22488 ]
[ "nonn" ]
A226764
[ 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6 ]
[ "nonn" ]
A372693
[ 7380, 18755, 24804, 25631, 26299, 27467, 32799, 44891, 49196, 49725, 50940, 53603, 59652, 64386, 71027, 79739, 85788, 89300, 94275, 103212, 105056, 105875, 124992, 129348, 132011, 138060, 141899, 147100, 149435, 155484, 158147, 164196, 170324, 175571, 181620, 184283 ]
[ "nonn" ]
A167528
[ 0, 1, 32, 43, 24, 25, 26, 7, 18, 49, 0, 1, 32, 43, 24, 25, 26, 7, 18, 49, 0, 1, 32, 43, 24, 25, 26, 7, 18, 49, 0, 1, 32, 43, 24, 25, 26, 7, 18, 49, 0, 1, 32, 43, 24, 25, 26, 7, 18, 49, 0, 1, 32, 43, 24, 25, 26, 7, 18, 49, 0, 1, 32, 43, 24, 25, 26, 7, 18, 49, 0, 1, 32, 43, 24, 25, 26, 7 ]
[ "nonn", "easy" ]
A107187
[ 7, 11, 107, 127, 211, 239, 263, 547, 571, 739, 743, 919, 1019, 1163, 1283, 1471, 1579, 1583, 1619, 1667, 1759, 2111, 2339, 2503, 2543, 2683, 2767, 2879, 3571, 3607, 3691, 3739, 3847, 3907, 4099, 4111, 4127, 4391, 4463, 4831, 4967, 5147 ]
[ "nonn", "easy" ]
A123328
[ 1, 3, 5, 9, 11, 19, 18, 33, 28, 48, 41, 70, 50, 96, 69, 118, 87, 152 ]
[ "easy", "nonn" ]
A166889
[ 1, 6, 52, 660, 11385, 251832, 6842220, 221228244, 8311401351, 356190316416, 17160064580802, 918453056609946, 54085054802995010, 3475794779752573000, 242103490865991900000, 1.817014351499845e+22 ]
[ "nonn" ]
A016482
[ 3, 1, 89, 1, 3, 2, 35, 1, 1, 1, 1, 39, 3, 1, 1, 1, 14, 4, 13, 2, 6, 1, 3, 1, 1, 12, 1, 2, 12, 1, 3, 1, 1, 14, 2, 1, 10, 123, 1, 14, 2, 3, 1, 2, 1, 3, 1, 72, 2, 8, 21, 1, 1, 1, 5, 1, 25, 4, 4, 1, 1, 89, 3, 1, 2, 1, 1, 4, 3, 6, 1, 3, 5, 59 ]
[ "nonn", "cofr" ]
A203477
[ 1, 3, 90, 97200, 14276736000, 1107198567383040000, 1.786016375619271e+29, 2.3785650991715607e+44, 1.0420480393274494e+64 ]
[ "nonn", "easy" ]
A194050
[ 1, 1, 2, 3, 1, 2, 3, 4, 1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 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, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ]
[ "nonn" ]
A177604
[ 1, 20, 1620, 327120, 132712008, 94893564856, 109367900957424, 190384380100623840, 476405198295293300000, 1.6482737068050092e+24 ]
[ "nonn" ]
A243221
[ 1, 1, 4, 44, 2593, 407620, 333518324, 696849783788, 7561681603209033, 204785162442300700000, 2.887442664791746e+25, 1.0023323177854055e+31, 1.8172145684566999e+37, 8.0387219406474e+43 ]
[ "nonn" ]
A056314
[ 3, 3, 15, 39, 132, 357, 1131, 3276, 9945, 29508, 88935, 265668, 798252, 2391441, 7177584, 21523320, 64579920, 193709763, 581160255, 1743392040, 5230264026, 15690529437, 47071855131, 141214764600 ]
[ "nonn" ]
A021137
[ 0, 0, 7, 5, 1, 8, 7, 9, 6, 9, 9, 2, 4, 8, 1, 2, 0, 3, 0, 0, 7, 5, 1, 8, 7, 9, 6, 9, 9, 2, 4, 8, 1, 2, 0, 3, 0, 0, 7, 5, 1, 8, 7, 9, 6, 9, 9, 2, 4, 8, 1, 2, 0, 3, 0, 0, 7, 5, 1, 8, 7, 9, 6, 9, 9, 2, 4, 8, 1, 2, 0, 3, 0, 0, 7, 5, 1, 8, 7, 9, 6, 9, 9, 2, 4, 8, 1, 2, 0, 3, 0, 0, 7, 5, 1, 8, 7, 9, 6 ]
[ "nonn", "cons", "easy" ]
A126163
[ 0, 1, 8, 27, 102, 375, 1134, 3589, 11942, 40410 ]
[ "hard", "nonn", "more" ]
A012017
[ 1, 1, 9, 153, 2993, -72111, -33331719, -7328604631, -1581635839519, -356792088521439, -81022312424248720, -15576441107086727000, 22243831754082386000, 3.2295057668536703e+24 ]
[ "sign" ]
A277758
[ 1, 2, 2, 4, 4, 5, 7, 9, 9, 10, 10, 12, 10, 11, 12, 13, 13, 14, 12, 14, 12, 15, 15, 17, 15, 19, 19, 17, 19, 20, 21, 17, 24, 20, 20, 21, 22, 22, 20, 26, 26, 24, 26, 29, 27, 28, 26, 27, 27, 31, 28, 28, 28, 31, 29, 30, 30, 28, 29, 32, 32, 26, 26, 31, 28, 29, 28, 30, 34, 33, 34, 35, 34, 31, 37, 35, 35, 35, 37, 42, 39, 37, 40 ]
[ "nonn" ]
A235855
[ 1370656, 283036828, 45872598284, 9088092971636, 1681785844690652, 326732285271947460, 62224648209955406000, 1.2006757734613023e+22, 2.302748461863099e+24, 4.4336096054899175e+26 ]
[ "nonn" ]
A150947
[ 1, 2, 9, 35, 151, 680, 3091, 14151, 66604, 312709, 1477845, 7064187, 33776392, 161972289, 782054269, 3776621763, 18274150703, 88793910636, 431582703033, 2100537100068, 10251967952026, 50052164785199, 244606975187753, 1197729068318476, 5866583177051961, 28756777564864880, 141158695193821810 ]
[ "nonn", "walk" ]
A274618
[ 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 3, 3, 2, 2, 8, 8, 9, 9, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 8, 8, 9, 9, 4, 4, 5, 5, 12, 12, 13, 13, 9, 9, 8, 8, 2, 2, 3, 3, 4, 4, 5, 5, 15, 15, 14, 14, 3, 3, 2, 2, 8, 8, 9, 9, 7, 7, 6, 6, 5, 5, 4, 4 ]
[ "nonn" ]
A322585
[ 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 ]
[ "nonn" ]
A061828
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 8, 6, 5, 5, 4, 4, 4, 4, 2, 17, 2, 5, 8, 4, 6, 3, 5, 3, 2, 21, 9, 2, 4, 4, 8, 3, 3, 6, 2, 23, 17, 6, 2, 4, 5, 3, 8, 3, 2, 27, 11, 7, 5, 2, 3, 3, 3, 3, 2, 28, 21, 17, 9, 4, 2, 3, 4, 5, 2, 30, 12, 7, 5, 4, 3, 2, 3, 3, 2, 32, 23, 7, 17, 4, 6, 3, 2, 3, 2, 33, 13, 21, 6, 5, 9 ]
[ "nonn", "base", "easy" ]
A333655
[ 1, 4, 24, 36, 48, 180, 240, 720, 840, 1260, 1680, 7560, 10080, 15120, 20160, 25200, 27720, 45360, 50400, 83160, 110880, 166320, 221760, 277200, 332640, 498960, 554400, 665280, 1081080, 2162160, 2882880, 3603600, 6486480, 7207200, 8648640, 10810800, 14414400 ]
[ "nonn" ]
A113553
[ 1, 4, 8, 11, 14, 17, 21, 24, 26, 29, 33, 36, 38, 41, 45, 48, 50, 53, 57, 60, 62, 65, 69, 72, 74, 77, 81, 84, 86, 89, 93, 96, 98, 101, 105, 108, 110, 113, 117, 120, 122, 125, 129, 132, 134, 137, 141, 144, 146, 149, 153, 156 ]
[ "nonn" ]
A278071
[ 1, 1, -1, 6, -4, 1, 60, -36, 9, -1, 840, -480, 120, -16, 1, 15120, -8400, 2100, -300, 25, -1, 332640, -181440, 45360, -6720, 630, -36, 1, 8648640, -4656960, 1164240, -176400, 17640, -1176, 49, -1, 259459200, -138378240, 34594560, -5322240, 554400, -40320, 2016, -64, 1 ]
[ "sign", "tabl" ]
A330555
[ 1, 4, 8, 8, 8, 1 ]
[ "nonn", "fini", "full" ]
A385884
[ 1, 3, 4, 5, 6, 7, 7, 8, 8, 9, 10, 10, 11, 12, 12, 13, 13, 13, 14, 14, 15, 16, 16, 16, 17, 18, 18, 18, 19, 19, 19, 20, 20, 21, 22, 22, 22, 23, 23, 24, 24, 25, 25, 25, 26, 26, 26, 27, 28, 28, 28, 28, 28, 29, 30, 30, 31, 31, 31, 32, 32, 33, 33, 33, 34, 34, 34 ]
[ "nonn" ]
A373728
[ 2, 4, 8, 12, 17 ]
[ "nonn", "hard", "more" ]
A062250
[ 1, 5, 79, 6974, 2037136, 2890467344, 14011554132032, 325330342132674560, 2.717339481985861e+22, 1.0158190320726535e+28, 1.3156630408268152e+34, 8.028018972288452e+40 ]
[ "nonn" ]
A144174
[ 4, 8, 8, 16, 12, 17, 15, 14, 27, 16, 29, 23, 23, 22, 52, 7, 58, 9, 31, 35, 70, 8, 32, 41, 33, 32, 65, 35, 67, 39, 47, 53, 47, 40, 42, 77, 61, 55, 49, 85, 53, 89, 58, 10, 71, 142, 9, 58, 57, 56, 71, 68, 109, 61, 72, 12, 79, 89, 178, 7, 127, 95, 68, 73, 76, 81, 81, 137, 88, 96 ]
[ "nonn" ]
A381587
[ 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 3, 1, 1, 1, 2, 1, 3, 1, 1, 1, 3, 1, 1, 1, 2, 1, 3, 1, 3, 1, 1, 1, 3, 1, 1, 1, 3, 1, 1, 1, 2, 1, 3, 1, 3, 1, 3, 1, 1, 1, 1, 1, 3, 1, 3, 1, 1, 1, 3, 1, 1, 1, 3, 1, 1, 1, 2, 1, 3, 1, 3, 1, 3, 1, 1, 1, 5, 1, 1, 1, 1, 1, 1, 1, 3, 1, 3 ]
[ "tabf", "nonn" ]
A253102
[ 1, 27, 27, 125, 27, 729, 125, 1331, 27, 729, 729, 3375, 125, 3375, 1331, 9261, 27, 729, 729, 3375, 729, 19683, 3375, 35937, 125, 3375, 3375, 15625, 1331, 35937, 9261, 79507, 27, 729, 729, 3375, 729, 19683, 3375, 35937, 729, 19683, 19683, 91125, 3375, 91125, 35937, 250047, 125, 3375, 3375, 15625 ]
[ "nonn" ]
A353587
[ 3, 15, 105, 2835, 66825, 3648645, 383107725, 97692469875, 1856156927625, 5568470782875, 9056719980433124, 33283445928091734000, 1.2980543911955776e+21, 3.952575621190534e+24, 3.6758953277071964e+26, 1.1252740799103663e+26, 3.8425663580939203e+27 ]
[ "nonn", "frac" ]
A026631
[ 1, 7, 30, 119, 467, 1820, 7076, 27493, 106848, 415538, 1617504, 6302416, 24581249, 95968478, 375029576, 1466881997, 5742440324, 22498218218, 88212326756, 346114729562, 1358944775654, 5338963361408, 20987909276600 ]
[ "nonn" ]
A190214
[ 1, 1, 4, 13, 41, 127, 395, 1232, 3842, 11977, 37336, 116392, 362846, 1131150, 3526285, 10992961, 34269838, 106833983, 333047961, 1038255251, 3236692893, 10090178578, 31455472326, 98060379357, 305696824386, 952989872706, 2970883650186, 9261535631926, 28872232090283 ]
[ "nonn", "easy" ]
A346686
[ 2, 3, 5, 7, 13, 68, 2142, 459153 ]
[ "nonn", "more", "hard" ]
A390776
[ 1, 3, 16, 102, 712, 5255, 40288, 317548, 2556376, 20926236, 173634752, 1456967358, 12341344216, 105384541314, 906188676224, 7839788763224, 68189882357624, 595942751236292, 5230451316862912, 46082719298571190, 407420110891009300, 3613393386648632300 ]
[ "nonn", "new" ]
A227951
[ 2, 2, 4, 2, 4, 2, 2, 4, 2, 4, 2, 10, 8, 2, 2, 40, 2, 14, 38, 2, 2, 2, 158, 20, 2, 52, 38, 2, 4, 60, 34, 652, 2, 8, 20 ]
[ "base", "nonn", "more" ]
A184402
[ 1, 4, 6, 10, 13, 17, 19, 23, 28, 30, 34, 36, 42, 45, 49, 51, 56, 59, 62, 67, 70, 75, 78, 82, 84, 88, 91, 97, 101, 105, 107, 111, 115, 117, 122, 126, 131, 133, 138, 142, 144, 149, 154, 156, 160, 162, 167, 172, 174, 180, 185, 187, 191, 193, 199, 201, 205, 207 ]
[ "nonn" ]
A348585
[ 1, 8, 27, 375, 459, 620, 1652, 2871, 3451, 3956, 8055, 8636, 8907, 9844, 10647, 12104, 19491, 20155, 27089, 27643, 38180, 41547, 48364, 62379, 74875, 79304, 83780, 90692, 115289, 139460, 146828, 233729, 291819, 297987, 324423, 338547, 365660, 377540, 392635, 403575 ]
[ "nonn" ]
A027128
[ 1, 2, 7, 24, 81, 274, 927, 3132, 10552, 35395, 118065, 391320, 1288260, 4212091, 13679558, 44141377, 141571286, 451475589, 1432198967, 4521270066, 14209424215, 44474645476, 138681426899, 430955113144, 1334997086607 ]
[ "nonn" ]
A038956
[ 3, 13, 17, 19, 41, 43, 53, 61, 79, 83, 97, 103, 107, 113, 131, 137, 149, 151, 167, 173, 179, 181, 191, 193, 197, 199, 223, 241, 251, 257, 263, 269, 271, 281, 311, 317, 337, 349, 353, 359, 367, 379, 389, 397, 401 ]
[ "nonn", "easy" ]
A324627
[ 0, 1, 1, 123, 1431, 28337, 457965, 8041166, 142688017, 2639058561, 50689730519, 1013206417391, 21074302033903, 456084254291809, 10265228833915968, 240124807728408480, 5833187694753202000 ]
[ "nonn" ]
A150022
[ 1, 2, 5, 18, 67, 258, 1054, 4336, 18390, 79546, 346789, 1536833, 6851192, 30817749, 139841923, 637266870, 2924137611, 13471986079, 62332135243, 289725945703, 1350473477529, 6318046817743, 29638426526944, 139393817258063, 657399735735674, 3106530600891371, 14713492006420404, 69818773620573290 ]
[ "nonn", "walk" ]
A176498
[ 0, 0, 0, 0, 0, 0, 0, 0, 1, 6, 9, 24, 58, 124, 312, 759, 1768, 4421, 10811, 27191, 68591, 174627, 441633, 1124795, 2866004, 7297500, 18585359, 47337643, 120562041, 307063757 ]
[ "more", "nonn" ]
A084756
[ 1, 3, 9, 34, 161, 926, 6277, 48980, 432161, 4252330, 46152101, 547589912, 7050080545, 97878067886, 1457471241605, 23169742992076, 391638677761217, 7013544950036690, 132646182806388420, 2641922573730212000 ]
[ "nonn", "easy" ]
A039925
[ 12, 67, 73, 29, 44, 54, 12, 73, 97, 48, 79, 91, 20, 20, 17, 31, 83, 20, 85, 66, 6, 24, 89, 57, 11, 27, 43, 3, 14, 29, 84, 52, 86, 13, 51, 70, 65, 88, 60, 88, 29, 15, 84, 77, 17, 86, 64, 87, 6, 55, 36, 44, 92, 58, 64, 91, 94, 48, 64, 65, 49, 56, 97, 93, 91, 59 ]
[ "nonn", "fini", "full" ]
A074854
[ 1, 3, 5, 13, 17, 57, 65, 209, 321, 801, 1025, 3905, 4097, 12417, 21505, 53505, 65537, 233985, 262145, 885761, 1327105, 3147777, 4194305, 16060417, 17825793, 50339841, 84148225, 220217345, 268435457, 990937089, 1073741825, 3506503681 ]
[ "easy", "nonn" ]
A141180
[ 31, 41, 71, 79, 89, 151, 191, 199, 239, 241, 271, 281, 311, 359, 401, 409, 431, 439, 449, 479, 521, 569, 599, 601, 631, 641, 719, 751, 761, 769, 809, 839, 881, 911, 919, 929, 991, 1009, 1031, 1039, 1049, 1129, 1151, 1201, 1231, 1249, 1279, 1289, 1319, 1321, 1361, 1399, 1409, 1439 ]
[ "nonn" ]
A170872
[ 1, 2, 9, 33, 9, 33, 126, 126, 9, 33, 126, 126, 126, 477, 756, 405, 9, 33, 126, 126, 126, 477, 756, 405, 126, 477, 756, 756, 1809, 3699, 3483, 1242, 9, 33, 126, 126, 126, 477, 756, 405, 126, 477, 756, 756, 1809, 3699, 3483, 1242, 126, 477, 756, 756, 1809, 3699, 3483, 1593 ]
[ "nonn" ]
A294646
[ 1, 1, 1, 7, 1, 1, 4, 1, 1, 16, 1, 11, 25, 1, 1, 25, 4, 1, 10, 1, 1, 16, 1, 36, 13, 1, 9, 43, 1, 1, 16, 61, 1, 52, 1, 1, 64, 60, 1, 79, 1, 16, 22, 1, 64, 70, 44, 1, 70, 1, 1, 16, 1, 1, 28, 1, 59, 16, 4, 67, 31, 11, 1, 97, 1, 106, 79, 1, 1, 106, 69, 136, 100, 1, 1, 52, 64, 1, 40, 32, 1, 31, 1, 131, 169 ]
[ "nonn" ]
A307217
[ 9, 15, 35, 119, 5543, 74447, 90859, 110767, 222179, 389993, 1526849, 2927297, 3626699, 4559939, 24017531, 137051711, 160832099, 229731743, 627699239, 880021141, 1001124539, 1041287603, 1104903617, 1592658611, 1717999139, 8843679683, 15575602979, 15614760199, 20374337479 ]
[ "nonn" ]
A347129
[ 0, 1, 1, 3, 1, 10, 1, 6, 3, 14, 1, 24, 1, 18, 16, 10, 1, 21, 1, 36, 20, 26, 1, 44, 3, 30, 6, 48, 1, 124, 1, 15, 28, 38, 24, 45, 1, 42, 32, 68, 1, 164, 1, 72, 39, 50, 1, 70, 3, 27, 40, 84, 1, 36, 32, 92, 44, 62, 1, 276, 1, 66, 51, 21, 36, 244, 1, 108, 52, 236, 1, 78, 1, 78, 33, 120, 36, 284, 1, 110, 10, 86, 1, 372, 44 ]
[ "nonn" ]
A202223
[ 1, 2, 6, 24, 119, 708, 4914, 38977, 347808, 3448482, 37610495, 447485376, 5767807974, 80062182733, 1190713519497, 18889300119942, 318385578137273, 5682173514985293, 107042610409389950, 2122634830121877000, 44196021893250000000, 964038681151139900000 ]
[ "nonn" ]
A336475
[ 1, 1, 6, 1, 10, 6, 14, 1, 27, 10, 22, 6, 26, 14, 60, 1, 34, 27, 38, 10, 84, 22, 46, 6, 75, 26, 108, 14, 58, 60, 62, 1, 132, 34, 140, 27, 74, 38, 156, 10, 82, 84, 86, 22, 270, 46, 94, 6, 147, 75, 204, 26, 106, 108, 220, 14, 228, 58, 118, 60, 122, 62, 378, 1, 260, 132, 134, 34, 276, 140, 142, 27, 146, 74, 450, 38, 308, 156 ]
[ "nonn", "easy", "mult" ]
A129454
[ 1, 1, 1, 2, 6, 1536, 7680, 8806025134080, 61642175938560, 2.168841254587542e+27, 7.562281854741111e+36, 1.3622995897233092e+60 ]
[ "nonn" ]
A377070
[ 1, 2, 3, 4, 5, 4, 6, 9, 7, 8, 9, 4, 10, 25, 11, 8, 12, 18, 27, 13, 4, 14, 49, 9, 15, 25, 16, 17, 8, 12, 18, 27, 19, 8, 20, 50, 125, 9, 21, 49, 4, 22, 121, 23, 16, 24, 36, 54, 81, 25, 4, 26, 169, 27, 8, 28, 98, 343, 29, 8, 12, 18, 20, 27, 30, 45, 50, 75, 125, 31 ]
[ "nonn", "easy", "tabf" ]
A300114
[ 8, 99, 629, 12669, 212470, 4293657, 87633085, 1730369641, 35186245661, 713786361249, 14393607529808, 291188464459322, 5893955544655595, 119194619149427570, 2410737833832521700, 48767679910947955000 ]
[ "nonn" ]
A090590
[ 1, -6, -20, 8, 176, 288, -832, -3968, -1280, 29184, 68608, -96256, -741376, -712704, 4505600, 14712832, -6619136, -130940928, -208928768, 629669888, 2930769920, 824180736, -21797797888, -50189041664, 74004299776, 549520932864 ]
[ "sign", "easy" ]
A253855
[ 3, 6, 8, 16, 256 ]
[ "nonn", "less" ]
A184952
[ 0, 1, 2, 4, 40, 52, 82, 4839, 5813, 8366, 11153, 46254, 1040968, 12925493 ]
[ "nonn", "hard", "more" ]
A318736
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 14, 15, 19, 21, 22, 23, 25, 30, 32, 36, 40, 42, 44, 46, 50, 53, 55, 56, 57, 59, 65, 67, 69, 73, 79, 87, 96, 98, 100, 104, 108, 110, 113, 115, 118, 122, 126, 134, 139, 151, 161, 167, 169, 172, 178, 180, 182 ]
[ "nonn" ]
A264101
[ 23, 33, 47, 62, 63, 86, 118, 134, 138, 143, 158, 167, 188, 195, 203, 204, 209, 223, 230, 243, 248, 275, 283, 294, 318, 323, 348, 368, 383, 385, 395, 398, 408, 411, 413, 418, 419, 426, 437, 440, 448, 454, 467, 473, 476, 489, 492, 503, 508, 518, 523, 558, 563, 566, 572, 608 ]
[ "nonn" ]
A353188
[ 0, 0, 0, 0, 1, 1, 3, 4, 8, 12, 19, 27, 41, 56, 80, 109, 150, 199, 268, 350, 461, 596, 771, 984, 1258, 1589, 2007, 2514, 3145, 3905, 4846, 5973, 7356, 9010, 11020, 13418, 16315, 19756, 23890, 28788, 34639, 41548, 49767, 59441, 70899, 84354, 100221, 118803, 140645, 166153, 196035, 230853, 271512 ]
[ "nonn" ]
A007227
[ 9, 42, 236, 1287, 7314, 41990, 245256, 1448655, 8649823, 52106040, 316360752, 1933910820, 11893566078, 73537906926, 456864894288, 2850557192175, 17854854154215, 112230508880490, 707714010205020, 4475876883386895 ]
[ "nonn" ]
A066492
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 91, 101, 111, 121, 131, 141, 151, 161, 171, 181, 182, 192, 202, 212, 222, 232, 242, 252, 262, 272, 273, 283, 293, 303, 313, 323, 333, 343, 353, 363, 364, 374, 384, 394, 404, 414, 424, 434, 444, 454, 455, 465, 475, 485, 495, 505, 515 ]
[ "base", "easy", "nonn" ]
A053561
[ 0, 1, 2, 3, 6, 15, 36, 87, 234, 645, 1782, 4893, 13608, 37994, 106434, 299025, 844182, 2391723, 6797196, 19369708, 55342972, 158486625, 454795398, 1307534319, 3765720066, 10862688116, 31381118658, 90780960426, 262951692390 ]
[ "nonn" ]
A243683
[ 1, 11, 246, 8391, 386211 ]
[ "nonn", "more" ]
A254509
[ 221858, 1038340, 11441442, 98841764, 801430034, 6835294784, 55061190276, 443132699990, 3548806179198, 28004471288892, 219764836858824, 1716345354165074, 13325759380833098, 102994137524770450 ]
[ "nonn" ]
A385157
[ 1, 2, 3, 9, 27, 65, 95, 123, 163, 303, 451, 597, 760, 1757, 2546, 2700, 7142, 25030, 25719, 25772, 49105, 61426, 90981, 107497, 194210, 659077, 6732590, 8513462, 9344030, 14549893, 32276115, 89912342, 181720904, 280120681, 437484689, 896754175, 10625891495, 30605576222 ]
[ "nonn", "base" ]
A315117
[ 1, 5, 9, 17, 21, 25, 31, 37, 42, 49, 52, 56, 66, 69, 74, 81, 84, 90, 99, 100, 104, 116, 116, 121, 131, 131, 137, 149, 147, 151, 166, 163, 168, 181, 178, 184, 199, 194, 198, 216, 210, 215, 231, 225, 231, 249, 241, 245, 266, 257 ]
[ "nonn" ]
A041051
[ 1, 1, 2, 7, 37, 118, 155, 273, 2885, 3158, 6043, 21287, 112478, 358721, 471199, 829920, 8770399, 9600319, 18370718, 64712473, 341933083, 1090511722, 1432444805, 2522956527, 26662010075, 29184966602, 55846976677, 196725896633, 1039476459842, 3315155276159 ]
[ "nonn", "cofr", "easy", "frac" ]
A239057
[ 3, 28, 110, 285, 570, 1012, 1647, 2480, 3570, 4953, 6622, 8648, 11067, 13860, 17110, 20853, 25058, 29820, 35175, 41080, 47642, 54897, 62790, 71440, 80883, 91052, 102078, 113997, 126730, 140420, 155103, 170688, 187330, 205065, 223790, 243672, 264747, 286900 ]
[ "nonn" ]
A201194
[ 0, 239, 4104, 62507, 817653, 9782242, 117867542, 1504100224, 20036576547, 268650529838, 3533651482495, 45103479980980, 557665091509317, 6693711518462620 ]
[ "nonn" ]
A267378
[ 7, 19, 79, 607, 9907, 20599, 65287, 104659, 129967, 331207, 1047559, 1184839, 1872799, 3746167, 4098607, 6762607, 7308919, 11313139, 20146639, 21376759, 28392919, 43040167, 54693427, 59961799, 84925447, 104050207, 108232819, 131068159, 168883027, 187375039 ]
[ "nonn", "easy" ]
A262271
[ 26, 676, 3639, 37061, 828152, 20331508, 411861253, 9709537177, 246785045498, 6349411267540, 161629359993567, 4164579496141613, 107965656860611000, 2802803758993454000, 72720752693665760000, 1.8888769889794502e+21 ]
[ "nonn" ]
A213740
[ 3, 7, 11, 31, 19, 23, 223, 31, 71, 79, 43, 47, 103, 223, 59, 127, 67, 71, 151, 79, 83, 197, 367, 191, 199, 103, 107, 223, 463, 239, 991, 127, 131, 271, 139, 971, 11987, 151, 311, 359, 163, 167, 5503, 1187, 179, 367, 751, 191, 1567, 199, 5099, 467, 211, 431 ]
[ "nonn" ]
A169068
[ 1, 7, 42, 252, 1512, 9072, 54432, 326592, 1959552, 11757312, 70543872, 423263232, 2539579392, 15237476352, 91424858112, 548549148672, 3291294892032, 19747769352192, 118486616113152, 710919696678912, 4265518180073472 ]
[ "nonn" ]
A011231
[ 1, 3, 2, 0, 4, 6, 9, 2, 4, 7, 7, 5, 6, 1, 2, 3, 7, 9, 1, 8, 0, 9, 3, 2, 7, 3, 3, 1, 5, 0, 0, 2, 6, 3, 0, 8, 2, 7, 3, 6, 6, 0, 0, 1, 5, 1, 9, 7, 3, 3, 5, 8, 2, 5, 1, 8, 0, 2, 6, 6, 1, 2, 8, 8, 3, 5, 4, 6, 7, 1, 7, 4, 3, 6, 5, 2, 8, 9, 1, 9, 8, 5, 5, 3, 3, 7, 2, 8, 8, 2, 4, 0, 9, 4, 6, 7, 3, 2, 4 ]
[ "nonn", "cons", "easy" ]
A071797
[ 1, 1, 2, 3, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 ]
[ "easy", "nonn", "tabf" ]
A226851
[ 957, 435829, 67929575, 9461306257, 1426163794260, 221491127478033, 34196613228139184, 5251691844285686000, 806309158874436900000, 1.238795934378311e+23 ]
[ "nonn" ]
A008327
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 4, 6, 4, 1, 1, 1, 1, 4, 14, 14, 4, 1, 1, 1, 1, 7, 41, 130, 41, 7, 1, 1, 1, 1, 8, 157, 1981, 1981, 157, 8, 1, 1, 1, 1, 12, 725, 62616, 304496, 62616, 725, 12, 1, 1, 1, 1, 14, 4196, 2806508, 78322916 ]
[ "nonn", "tabl", "nice" ]
A006084
[ 0, 1, 9, 1, 1, 1, 5, 1, 1, 1, 1, 26, 1, 1, 3, 5, 1, 3, 1, 1, 44, 1, 1, 5, 5, 1, 5, 1, 1, 62, 1, 1, 7, 5, 1, 7, 1, 1, 80, 1, 1, 9, 5, 1, 9, 1, 1, 98, 1, 1, 11, 5, 1, 11, 1, 1, 116, 1, 1, 13, 5, 1, 13, 1, 1, 134, 1, 1, 15, 5, 1, 15, 1, 1, 152, 1, 1, 17, 5, 1, 17, 1, 1, 170, 1, 1, 19, 5, 1, 19, 1, 1 ]
[ "nonn", "cofr", "easy" ]
A109650
[ 11, 13, 19, 23, 31, 47, 97, 101, 103, 107, 109, 113, 131, 137, 139, 151, 157, 163, 181, 191, 193, 197, 199, 227, 229, 233, 239, 241, 307, 311, 313, 317, 331, 457, 461, 463, 467, 479, 487, 491, 499, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983 ]
[ "nonn" ]
A235379
[ 3, 5, 7, 11, 3, 19, 23, 27, 29, 33, 40, 11, 49, 53, 11, 59, 66, 35, 73, 77, 27, 42, 88, 15, 94, 48, 11, 103, 107, 37, 117, 121, 43, 66, 134, 23, 140, 71, 146, 37, 150, 51, 157, 40, 164, 83, 169, 59, 181, 183, 11, 97, 198, 101, 42, 55, 230, 239, 242, 247, 250, 127 ]
[ "nonn", "base", "frac" ]
A036001
[ 1, 1, 2, 3, 4, 6, 8, 11, 15, 20, 26, 35, 45, 58, 75, 96, 121, 154, 193, 242, 302, 375, 462, 572, 701, 858, 1047, 1275, 1545, 1872, 2257, 2718, 3264, 3912, 4674, 5581, 6641, 7892, 9359, 11082, 13090, 15447, 18186, 21385, 25102, 29425, 34430, 40247 ]
[ "nonn", "easy" ]
A119996
[ 1, 5, 14, 39, 103, 272, 713, 1869, 4894, 12815, 33551, 87840, 229969, 602069, 1576238, 4126647, 10803703, 28284464, 74049689, 193864605, 507544126, 1328767775, 3478759199, 9107509824, 23843770273, 62423800997, 163427632718 ]
[ "frac", "nonn", "easy" ]
A013486
[ -4, 60, -1384, 50520, -1963564, -2440620, 24774209456, -7410634833360, 1946918835205676, -504022869697607700, 125734569960701150000, -2.5506896972028634e+22, -3.0873997851061926e+23 ]
[ "sign" ]
A258241
[ 0, 1, 3, 2, 6, 4, 5, 12, 7, 8, 10, 22, 15, 19, 13, 39, 9, 11, 24, 27, 23, 34, 69, 14, 16, 17, 20, 48, 60, 40, 41, 43, 121, 31, 36, 25, 28, 29, 35, 72, 76, 84, 105, 70, 71, 211, 18, 21, 45, 51, 64, 42, 44, 49, 50, 55, 61, 62, 126, 147, 183, 122, 124, 133, 367 ]
[ "nonn", "tabf", "easy" ]
A032387
[ 1, 3, 4, 6, 7, 10, 12, 34, 43, 51, 57, 60, 63, 67, 87, 102, 163, 222, 247, 312, 397, 430, 675, 831, 984, 1018, 1054, 1615, 2017, 2157, 4705, 4923, 5473, 5682, 9063, 9118, 9657, 12250, 14895, 14901, 19794, 22750, 25350, 36015, 104082, 146163, 223698, 361614 ]
[ "nonn" ]
A224666
[ 78, 108, 142, 180, 222, 268, 318, 372, 430, 492, 558, 628, 702, 780, 862, 948, 1038, 1132, 1230, 1332, 1438, 1548, 1662, 1780, 1902, 2028, 2158, 2292, 2430, 2572, 2718, 2868, 3022, 3180, 3342, 3508, 3678, 3852, 4030, 4212, 4398, 4588, 4782, 4980, 5182 ]
[ "nonn" ]
A040822
[ 29, 5, 3, 2, 4, 2, 3, 5, 58, 5, 3, 2, 4, 2, 3, 5, 58, 5, 3, 2, 4, 2, 3, 5, 58, 5, 3, 2, 4, 2, 3, 5, 58, 5, 3, 2, 4, 2, 3, 5, 58, 5, 3, 2, 4, 2, 3, 5, 58, 5, 3, 2, 4, 2, 3, 5, 58, 5, 3, 2, 4, 2, 3, 5, 58, 5, 3, 2, 4, 2, 3, 5, 58, 5, 3, 2, 4, 2, 3, 5, 58, 5, 3, 2, 4, 2, 3, 5 ]
[ "nonn", "cofr", "easy" ]
A145253
[ 1, 7, 1855, 488509, 4884669475, 48533789554789, 18312348548135120000 ]
[ "nonn" ]
A382456
[ 3, 6, 21, 115, 836, 6943, 63113, 585517, 5263827, 45808290, 398309972 ]
[ "nonn", "base", "more" ]
A076368
[ 1, 2, 3, 3, 5, 3, 5, 3, 5, 7, 3, 7, 5, 3, 5, 7, 7, 3, 7, 5, 3, 7, 5, 7, 9, 5, 3, 5, 3, 5, 15, 5, 7, 3, 11, 3, 7, 7, 5, 7, 7, 3, 11, 3, 5, 3, 13, 13, 5, 3, 5, 7, 3, 11, 7, 7, 7, 3, 7, 5, 3, 11, 15, 5, 3, 5, 15, 7, 11, 3, 5, 7, 9, 7, 7, 5, 7, 9, 5, 9, 11, 3, 11, 3, 7, 5, 7, 9, 5, 3, 5, 13, 9, 5, 9, 5, 7 ]
[ "nonn" ]
A058139
[ 3, 14, 63, 406, 3331 ]
[ "nonn", "more" ]
A373873
[ 0, 1, 3, 31, 765, 34651, 2502213, 263824891, 38248036725, 7298877611371, 1773652375115973, 534749297993098600, 195883403209280600000, 8.568765845461766e+22, 4.412026418538141e+25, 2.6413555571018243e+28 ]
[ "nonn" ]
A381168
[ 3, 27, 16940, 4160546840189, 6.170885623795867e+37, 2.0134489501864684e+113 ]
[ "nonn" ]
A322686
[ 5701466232, 5806935288, 5824716000, 5863036500, 5940941280, 5978840580, 5980026420, 6376872150, 6520948434, 6566627430, 5806935288, 5824716000, 5863036500, 5940941280, 5978840580, 5980026420, 6376872150, 6520948434, 6566627430, 6726168150 ]
[ "nonn", "tabf" ]
A230675
[ 0, 3, 0, 3, 15, 0, 9, 87, 81, 0, 15, 513, 1173, 423, 0, 33, 3387, 18915, 17271, 2247, 0, 63, 21933, 340563, 730503, 251595, 11925, 0, 129, 141411, 6081561, 37034355, 28368687, 3669765, 63291, 0, 255, 913245, 108108231, 1844154933, 4022141121, 1100265795 ]
[ "nonn", "tabl" ]