id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A066776
[ 1, 2, 3, 4, 69, 113 ]
[ "base", "hard", "nonn" ]
A176823
[ 0, 1, 8, 17, 399, 73, 44638, 1570497, 5077565, 486784401, 22187726197, 166394893969, 13800864889148, 762517292682713, 9603465430859100, 803800832678655700, 3180753925351615000, 947615093635545800000 ]
[ "nonn" ]
A198669
[ 0, 1, 1, 1, 3, 1, 2, 13, 13, 2, 3, 65, 132, 65, 3, 6, 401, 2715, 2715, 401, 6, 11, 2798, 59281, 199923, 59281, 2798, 11, 23, 21243, 1544783, 16089057, 16089057, 1544783, 21243, 23, 47, 170477, 40546053, 1382332582, 4202762288, 1382332...
[ "nonn", "tabl" ]
A193701
[ 1, 15, 183, 953, 7799, 58661, 416291, 3109443, 22837977, 167468295, 1233723835, 9067625183, 66666846231, 490306244985, 3605057176121, 26508858876345, 194928358871853, 1433337703487151, 10539668947354104, 77500564655649380 ]
[ "nonn" ]
A153373
[ 5, 18, 66, 244, 906, 3372, 12566, 46860, 174810, 652252, 2433942, 9083004, 33897050, 126503148, 472111446, 1761934444, 6575609946, 24540472572, 91586214806, 341804255580, 1275630545370, 4760717401612, 17767238012502 ]
[ "nonn", "easy" ]
A059620
[ 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0...
[ "easy", "fini", "full", "nonn", "nice" ]
A096131
[ 1, 7, 105, 2386, 71890, 2695652, 120907185, 6312179764, 375971507406, 25160695768715, 1869031937691061, 152603843369288830, 13584174777196667000, 1.309317592648179e+21, 1.3585089074057541e+23 ]
[ "nonn" ]
A231327
[ 1, 15, 105, 675675, 34459425, 16368226875, 218517792968475, 30951416768146876, 694097901592400900000, 2.3383376494609716e+28, 2.2896863456873574e+30, 2.1901247025838383e+32, 4.7919650462909124e+39 ]
[ "nonn", "frac" ]
A264938
[ 0, 1, 6, 16, 29, 46, 68, 93, 122, 156, 193, 234, 280, 329, 382, 440, 501, 566, 636, 709, 786, 868, 953, 1042, 1136, 1233, 1334, 1440, 1549, 1662, 1780, 1901, 2026, 2156, 2289, 2426, 2568, 2713, 2862, 3016, 3173, 3334, 3500, 3669, ...
[ "nonn", "easy" ]
A223445
[ 144, 1616, 20640, 262368, 3364544, 43139520, 553773760, 7110140800, 91312361088, 1172796624128, 15064174682368, 193501020879360, 2485596168674816, 31928841920689150, 410146384220210200, 5268614337966066000 ]
[ "nonn" ]
A038239
[ 1, 4, 9, 16, 72, 81, 64, 432, 972, 729, 256, 2304, 7776, 11664, 6561, 1024, 11520, 51840, 116640, 131220, 59049, 4096, 55296, 311040, 933120, 1574640, 1417176, 531441, 16384, 258048, 1741824, 6531840, 14696640, 19840464, 14880348 ]
[ "nonn", "tabl", "easy" ]
A048906
[ 1, 297045, 69010153345, 16032576845184900, 3.724720317758036e+21, 8.6533447364615e+26, 2.0103623558269615e+32, 4.6705140322177795e+37, 1.0850631609727953e+43, 2.5208404367885127e+48 ]
[ "nonn", "easy" ]
A057810
[ 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, ...
[ "nonn", "easy" ]
A192536
[ 1, 2, 4, 6, 15, 16, 24, 34, 40, 54, 211, 214, 216, 219, 240, 244, 249, 338, 361, 384, 540, 544, 556, 565, 621, 640, 864, 1090, 1104, 1126, 1140, 1324, 1516, 1525, 1536, 1564, 1581, 1696, 1734, 2076, 2400, 2736, 2740, 2790, 2824,...
[ "nonn" ]
A145437
[ 1, 63855, 776600, 3825360, 4809024, 25530120, 570240, 29937600, 26611200, 25945920, 43545600, 21621600, 0, 8553600, 6652800, 0, 0, 0, 0, 11975040, 11404800, 0, 0, 0, 0, 0, 0, 0, 0, 3991680, 0, 0, 0, 0, 13685760 ]
[ "nonn", "fini", "full" ]
A361229
[ 1, 0, 0, 0, 1, 2, 3, 4, 7, 14, 27, 48, 84, 152, 284, 532, 987, 1826, 3401, 6384, 12024, 22656, 42728, 80780, 153151, 290970, 553601, 1054688, 2012373, 3845646, 7359345, 14100692, 27048061, 51941850, 99855389, 192163904, 370159216, 713672568, ...
[ "nonn" ]
A241522
[ 1, 8, 21, 64, 89, 168, 301, 512, 561, 712, 965, 1344, 1801, 2408, 3165, 4096, 4193, 4488, 4981, 5696, 6585, 7720, 9101, 10752, 12433, 14408, 16677, 19264, 22121, 25320, 28861, 32768, 32961, 33544, 34517, 35904, 37657, 39848, 42477, 45568,...
[ "nonn" ]
A315619
[ 1, 6, 12, 15, 21, 24, 27, 39, 42, 51, 51, 60, 60, 72, 78, 84, 87, 93, 93, 108, 105, 117, 117, 126, 126, 138, 144, 144, 153, 159, 159, 174, 171, 183, 177, 192, 192, 204, 210, 210, 219, 219, 225, 240, 237, 249, 243, 258, 2...
[ "nonn" ]
A114863
[ 1, 0, 1, 1, 1, 2, 3, 3, 4, 7, 7, 10, 18, 18, 26, 45, 44, 64, 113, 112, 163, 287, 285, 416, 733, 731, 1067, 1885, 1885, 2755, 4873, 4881, 7147, 12659, 12697, 18613, 33007, 33143, 48638, 86337, 86777, 127463, 226454, 227795, 33486...
[ "easy", "nonn" ]
A237675
[ 63000, 1346420, 30618976, 796647426, 20221334140, 498113608930, 12343384024320, 311516250091564, 7827815524635584, 195109685747765900, 4870240306854394000, 122133722554552200000, 3.0602219553133303e+21 ]
[ "nonn" ]
A150465
[ 1, 2, 7, 25, 98, 384, 1597, 6670, 28408, 122197, 532921, 2337294, 10329095, 45940042, 205457964, 922539912, 4160226856, 18832804377, 85520622884, 389438385157, 1778378619115, 8140951032081, 37345967380943, 171669588822748, 790652967249590, 3647705679269181, 168551...
[ "nonn", "walk" ]
A237976
[ 0, 0, 0, 1, 1, 1, 2, 2, 3, 4, 6, 7, 9, 11, 14, 17, 21, 25, 31, 37, 45, 54, 64, 76, 90, 106, 124, 146, 170, 198, 230, 267, 308, 357, 410, 472, 542, 621, 709, 811, 923, 1051, 1194, 1355, 1534, 1738, 1962, 2215, 2497, 281...
[ "nonn", "easy" ]
A052995
[ 0, 2, 4, 10, 26, 68, 178, 466, 1220, 3194, 8362, 21892, 57314, 150050, 392836, 1028458, 2692538, 7049156, 18454930, 48315634, 126491972, 331160282, 866988874, 2269806340, 5942430146, 15557484098, 40730022148, 106632582346, 279167724890, 730870592324 ]
[ "nonn", "easy" ]
A380683
[ 1, 3, 11, 44, 185, 806, 3620, 16732, 79540, 388643, 1949282, 10013543, 52527829, 280419434, 1518360693, 8313011022, 45902814834, 255113772507, 1424884037539, 7989178696699, 44934216024959, 253391300848307, 1432226630488773, 8112521901225671, 46044227635950536, 26184...
[ "nonn" ]
A313050
[ 1, 4, 9, 14, 18, 23, 28, 31, 34, 41, 48, 50, 51, 57, 66, 69, 70, 76, 83, 86, 88, 96, 103, 102, 103, 114, 124, 122, 119, 129, 142, 142, 139, 147, 158, 159, 158, 168, 177, 174, 173, 187, 199, 193, 188, 202, 218, 214, 207, ...
[ "nonn" ]
A203527
[ 1, 5, 350, 529200, 17542980000, 14783258730240000, 5.114203311388115e+23, 8.719806655895016e+32, 6.015068565920576e+43, 1.8277119794156448e+56 ]
[ "nonn" ]
A009122
[ 1, 0, 1, -6, 41, -335, 3229, -36036, 457932, -6534384, 103499016, -1802302128, 34227784920, -704076488232, 15595687319640, -370108332316992, 9368461983616128, -251958336139856450, 7174771808983995000 ]
[ "sign", "easy" ]
A368104
[ 1, 1, 1, 2, 1, 1, 1, 4, 2, 1, 1, 2, 1, 1, 1, 4, 1, 2, 1, 2, 1, 1, 1, 4, 2, 1, 4, 2, 1, 1, 1, 6, 1, 1, 1, 4, 1, 1, 1, 4, 1, 1, 1, 2, 2, 1, 1, 4, 2, 2, 1, 2, 1, 4, 1, 4, 1, 1, 1, 2, 1, 1, 2, 6...
[ "nonn", "easy", "mult" ]
A199549
[ 576, 576, 1152, 1440, 1440, 2880, 2880, 2880, 2880, 7200, 13824, 34560, 34560, 34560, 34560, 69120, 69120, 86400, 172800, 172800, 829440, 829440, 2073600, 2073600, 4147200, 49766400 ]
[ "nonn", "fini", "full" ]
A061717
[ 0, 2, 5, 8, 12, 16, 20, 24, 29, 34, 39, 44, 49, 54, 59, 64, 70, 76, 81, 87, 93, 99, 105, 111, 117, 123, 129, 135, 141, 148, 154, 160, 167, 173, 180, 187, 193, 200, 207, 213, 220, 227, 234, 241, 248, 255, 262, 269, 276, ...
[ "easy", "nonn" ]
A363108
[ 1, 2, 7, 26, 86, 318, 1165, 4312, 16318, 62020, 238165, 921980, 3590145, 14067188, 55399442, 219172028, 870736366, 3472155062, 13892694747, 55759406580, 224427809830, 905659181212, 3663475842865, 14851965523630, 60334690089827, 245572722474460, 1001306332164918 ]
[ "nonn" ]
A320621
[ 47293, 954474, 15508464, 241671288, 3808957488, 62028248808, 1053594440748, 18837315620872, 355520118746132, 7047222477079248, 146217215537789600, 3167613534709242400, 71513228693083280000, 1.679867307590816e+21, 4.100449696253546e+22 ]
[ "nonn" ]
A348383
[ 1, 1, 1, 2, 1, 2, 1, 2, 2, 2, 1, 4, 1, 2, 2, 4, 1, 4, 1, 4, 2, 2, 1, 6, 2, 2, 2, 4, 1, 5, 1, 5, 2, 2, 2, 9, 1, 2, 2, 6, 1, 5, 1, 4, 4, 2, 1, 10, 2, 4, 2, 4, 1, 6, 2, 6, 2, 2, 1, 11, 1, 2, 4, ...
[ "nonn" ]
A355680
[ 1, -7, 17, 25, -47, -55, -71, -79, 137, 145, 161, 169, 209, 217, 233, 241, -407, -415, -431, -439, -479, -487, -503, -511, -623, -631, -647, -655, -695, -703, -719, -727, 1217, 1225, 1241, 1249, 1289, 1297, 1313, 1321, 1433, 1441, 1...
[ "sign", "easy" ]
A209236
[ 4, 6, 18, 30, 198, 462, 1482, 2550, 3330, 4422, 9042, 11778, 26862, 38610, 47058, 60258, 62130, 65538, 69498, 79902, 96222, 106782, 124542, 143262, 149058, 151902, 184830, 200382, 208962, 225342, 237690, 249858, 251262, 295038, 301182, 312702, ...
[ "nonn" ]
A204962
[ 16, 51, 51, 156, 277, 156, 450, 1436, 1436, 450, 1267, 6921, 12714, 6921, 1267, 3490, 32468, 103106, 103106, 32468, 3490, 9490, 147434, 807253, 1442543, 807253, 147434, 9490, 25545, 659392, 5988660, 19632936, 19632936, 5988660, 659392, 25545, 6...
[ "nonn", "tabl" ]
A252207
[ 51024, 215814, 2908856, 11207238, 193004794, 2778728210, 10519316686, 185237248134, 2757905885304, 10320806426406, 183760175803834, 2783001368929202, 10347503929104718, 185246818559668600 ]
[ "nonn" ]
A263190
[ 1, 1, 0, 1, 46, 1723, 81104, 4793304, 349869074, 31080492631, 3318717525832, 421195540320465, 62871475566985210, 10927921934497456000, 2.1910683437277368e+21, 5.0238440900668604e+23, 1.3068781445179856e+26, 3.829433352102838e+28, 1.2557951067433974e+31, 4.581888866092826e+33 ]
[ "nonn" ]
A366552
[ 0, 1, 104, 122, 0, 130, 3, 9, 103, 0, 119, 5, 11, 105, 0, 121, 7, 13, 107, 0, 123, 9, 15, 109, 0, 125, 11, 17, 111, 0 ]
[ "nonn", "more" ]
A287132
[ 1, 1, 0, 7, 24, 31, 96, 63, 384, 255, 1536, 1023, 6144, 4095, 24576, 16383, 98304, 65535, 393216, 262143, 1572864, 1048575, 6291456, 4194303, 25165824, 16777215, 100663296, 67108863, 402653184, 268435455, 1610612736, 1073741823, 6442450944, 429496729...
[ "nonn", "easy" ]
A240630
[ 1, 8, 129, 4989, 470170, 109584463, 63213422873, 90394294712339, 320691260884992260, 2.823496298905254e+21 ]
[ "nonn" ]
A146032
[ 1, 1, 1, 1, 1, 1, 5, 5, 19, 19, 79, 79, 523, 523, 9169, 9169, 183491, 183491, 4964583, 4964583, 219022025, 219022025, 16321424419, 16321424419, 1718337883769, 1718337883769, 267799571260427, 267799571260427 ]
[ "nonn" ]
A259932
[ 3, 5, 13, 41, 113, 761, 1201, 1741, 1861, 2113, 9661, 9941, 12641, 13613, 15313, 21841, 23981, 30013, 34061, 47741, 49613, 60901, 70313, 83641, 101701, 237361, 241513, 252761, 303421, 335381, 377581, 413141, 489061, 491041, 525313, 529421, 6373...
[ "nonn" ]
A341436
[ 1, 5, 16, 208, 688, 784, 2864, 9555, 17776, 81239 ]
[ "nonn", "more" ]
A152013
[ 19, 27, 31, 37, 41, 44, 46, 49, 50, 53, 55, 57, 58, 59, 61, 64, 67, 68, 69, 70, 71, 73, 77, 78, 79, 80, 81, 84, 85, 86, 87, 88, 89, 90, 91, 92, 95, 96, 97, 99, 100, 101, 102, 103, 104, 107, 109, 110, 113, 114, 115, ...
[ "nonn" ]
A061353
[ 1, 3, 4, 0, 1, 1, 2, 6, 7, 5, 6, 8, 9, 5, 6, 6, 7, 1, 2, 0, 1, 3, 4, 0, 1, 1, 2, 6, 7, 5, 6, 8, 9, 5, 6, 6, 7, 1, 2, 0, 1, 3, 4, 0, 1, 1, 2, 6, 7, 5, 6, 8, 9, 5, 6, 6, 7, 1, 2, 0, 1, 3, 4, 0...
[ "nonn", "easy" ]
A123174
[ 20, 8, 27, 164, 98, 345, 343, 222, 555, 590, 1358, 1388, 1394, 1407, 1406, 1419, 3435, 3231, 3237, 3236, 3245, 3243, 3275, 3282, 3292, 3297, 8163, 8361, 8666, 8662, 8494, 8493, 8538, 8590 ]
[ "easy", "nonn" ]
A332083
[ -2, -1, -1, -1, -1, -2, 1, -1, 2, 2, -1, 1, -6, -2, -1, -3, -2, -2, -2, -2, -3, -1, -2, -6, 1, -2, 6, 2, -2, 3, 3, -2, 2, 6, -2, 1, -2, 2, -1, -1, 2, -2, 1, 2, 2, 2, 2, 1, -12, -3, -1, -6, -3, -2, -4, -3, ...
[ "sign", "tabf" ]
A376507
[ 18, 24, 26, 32, 68, 74, 76, 82, 118, 124, 126, 132, 168, 174, 176, 182, 218, 224, 226, 232, 268, 274, 276, 282, 318, 324, 326, 332, 368, 374, 376, 382, 418, 424, 426, 432, 468, 474, 476, 482, 518, 524, 526, 532, 568, 574, 57...
[ "nonn", "easy" ]
A026715
[ 1, 3, 13, 63, 319, 1647, 8583, 44941, 235913, 1240173, 6524919, 34346785, 180855499, 952494047, 5017037457, 26428222177, 139223327493, 733452042061, 3864043260671, 20357263645411, 107251092223601, 565050705077767 ]
[ "nonn" ]
A209559
[ 1, 1, 1, 3, 2, 1, 5, 8, 3, 1, 9, 17, 15, 4, 1, 15, 38, 39, 24, 5, 1, 25, 76, 104, 74, 35, 6, 1, 41, 149, 242, 229, 125, 48, 7, 1, 67, 282, 543, 607, 440, 195, 63, 8, 1, 109, 524, 1159, 1531, 1308, 769, 287, 80, ...
[ "nonn", "tabl" ]
A386611
[ 0, 1, 12, 126, 1268, 12513, 122148, 1184364, 11432100, 109997460, 1055891248, 10117633542, 96812495820, 925334377822, 8836315646616, 84317468847768, 804064275489924, 7663595943744876, 73009005101019790, 695263276434910000, 6618709687608910000, 62989317586872240000 ]
[ "nonn" ]
A130710
[ 2, 7, 13, 11, 7, 3, 13, 5, 17, 11, 19, 17, 23, 19, 31, 41, 37, 43, 53, 47, 71, 59, 61, 97, 103, 113, 79, 137, 101, 139, 151, 157, 173, 137, 199, 149, 211, 223, 173, 227, 181, 197, 263, 199, 211, 283 ]
[ "nonn", "uned" ]
A048902
[ 1, 221, 71065, 22882613, 7368130225, 2372515049741, 763942477886281, 245987105364332640, 79207083984837230000, 2.5504435056012224e+22, 8.212348880951951e+24, 2.644350835231472e+27, 8.51472756595653e+29, 2.7417158327296506e+32 ]
[ "nonn", "easy" ]
A187823
[ 5, 17, 73, 257, 757, 65537, 262657, 1772893, 4432676798593, 48551233240513, 378890487846991, 3156404483062657, 17390284913300672, 280343912759041760, 319913861581383360, 487014306953858700, 5559917315850180000, 7824668707707204000, 8443914727229481000, 32564717507686010000 ]
[ "nonn" ]
A048497
[ 1, 2, 8, 28, 84, 228, 580, 1412, 3332, 7684, 17412, 38916, 86020, 188420, 409604, 884740, 1900548, 4063236, 8650756, 18350084, 38797316, 81788932, 171966468, 360710148, 754974724, 1577058308, 3288334340, 6845104132, 14227079172, 29527900164, 61203283972 ]
[ "nonn", "easy" ]
A176117
[ 2, 5, 809 ]
[ "nonn", "bref", "more" ]
A146478
[ 2, 2, 1, 4, 2, 1, 3, 6, 4, 1, 8, 3, 5, 10, 4, 1, 6, 3, 10, 8, 9, 4, 2, 7, 9, 3, 12, 6, 7, 7, 12, 6, 7, 18, 5, 20, 5, 18, 4, 1, 14, 5, 16, 15, 3, 20, 26, 4, 2, 1, 9, 12, 19, 14, 3, 12, 5, 24, 9, 15, ...
[ "nonn" ]
A346153
[ 1, 2, 3, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 7, 5, 7, 5, 5, 5, 7, 5, 7, 5, 7, 7, 7, 7, 7, 7, 7, 7...
[ "nonn" ]
A149655
[ 1, 1, 5, 15, 75, 289, 1445, 6095, 30475, 135117, 675585, 3087987, 15439935, 72008619, 360043095, 1703029437, 8515147185, 40694381623, 203471908115, 979988489573, 4899942447865, 23742016308033, 118710081540165, 577930415357795, 2889652076788975, 14121788791089080, ...
[ "nonn", "walk" ]
A012150
[ 1, 1, 1, 4, 13, 76, 421, 3256, 25369, 245008, 2449801, 28441216, 346065061, 4700478784, 67243537453, 1047088053376, 17192488230961, 302112622479616, 5593309059948049, 109527844826856450, 2255588021494237400 ]
[ "nonn" ]
A199910
[ 6, 12, 24, 42, 60, 84, 114, 144, 180, 222, 264, 312, 366, 420, 480, 546, 612, 684, 762, 840, 924, 1014, 1104, 1200, 1302, 1404, 1512, 1626, 1740, 1860, 1986, 2112, 2244, 2382, 2520, 2664, 2814, 2964, 3120, 3282, 3444, 3612, 3786, ...
[ "nonn" ]
A254489
[ 3727552, 186999040, 8552031360, 410218207872, 18812857512320, 871411470160000, 39860323285338750, 1827469551074952200, 83709155693842680000, 3.847122344420401e+21, 1.7633217176501215e+23 ]
[ "nonn" ]
A068236
[ 30, 180, 570, 1320, 2550, 4380, 6930, 10320, 14670, 20100, 26730, 34680, 44070, 55020, 67650, 82080, 98430, 116820, 137370, 160200, 185430, 213180, 243570, 276720, 312750, 351780, 393930, 439320, 488070, 540300, 596130, 655680, 719070, 786420, 8578...
[ "nonn", "easy" ]
A113248
[ 0, 0, 2, 8, 56, 336, 2496, 19968, 181248, 1812480, 19956480, 239477760, 3113487360, 43588823040, 653836861440, 10461389783040, 177843708887040, 3201186759966720, 60822550111518720, 1216451002230374400 ]
[ "nonn" ]
A328538
[ 8, 12, 24, 40, 48, 120, 168 ]
[ "nonn", "fini", "full" ]
A323957
[ 0, 1, 2, 9, 28, 90, 360, 1526, 7616, 32460, 190800, 947760, 6382464, 37065600, 296524800, 1812861600, 15283107840, 105015593280, 1017540576000, 7304720544000, 74472335308800, 629300251008000, 7429184791142400, 62417372203929600, 746041213793075200 ]
[ "nonn" ]
A349480
[ 1, 1, 10, 390, 33456, 4845360, 1059099840, 325460948400, 133697543616000, 70733019878196480, 46831083260349020000, 3.792783020148296e+22, 3.688344251187737e+25, 4.240921294618771e+28 ]
[ "nonn" ]
A038052
[ 1, 1, 2, 7, 42, 376, 4513, 68090, 1238968, 26416729, 646140364, 17837852044, 548713088399, 18612963873492, 690271321314292, 27785827303491580, 1206582732097720000, 56224025231569020000, 2.798445211000659e+21, 1.4817832444213982e+23, 8.317074395027725e+24 ]
[ "nonn", "nice", "easy" ]
A016771
[ 0, 2187, 279936, 4782969, 35831808, 170859375, 612220032, 1801088541, 4586471424, 10460353203, 21870000000, 42618442977, 78364164096, 137231006679, 230539333248, 373669453125, 587068342272, 897410677851 ]
[ "nonn", "easy" ]
A293421
[ 1, 3, 6, 13, 24, 45, 77, 132, 213, 346, 537, 834, 1257, 1893, 2778, 4077, 5865, 8421, 11903, 16785, 23364, 32444, 44562, 61041, 82859, 112164, 150639, 201768, 268413, 356100, 469636, 617724, 808236, 1054802, 1370127, 1775286, 2290610, 2948427...
[ "nonn" ]
A155855
[ 1, 1, 5, 7, 8, 4, 1, 9, 8, 3, 3, 7, 7, 1, 7, 8, 3, 8, 5, 3, 5, 4, 7, 6, 4, 9, 2, 1, 7, 2, 0, 4, 3, 3, 9, 0, 0, 0, 5, 1, 9, 9, 6, 2, 0, 2, 6, 3, 8, 2, 4, 8, 1, 2, 7, 8, 1, 9, 8, 3, 3, 6, 9, 2...
[ "nonn", "cons" ]
A387843
[ 1, 1, 5, 22, 85, 341, 1366, 5461, 21845, 87382, 349525, 1398101, 5592406, 22369621, 89478485, 357913942, 1431655765, 5726623061, 22906492246, 91625968981, 366503875925, 1466015503702, 5864062014805, 23456248059221, 93824992236886, 375299968947541, 1501199875790165...
[ "nonn", "easy" ]
A127598
[ 2, 5, 5, 149, 853, 2389, 17749, 70997, 218453, 2708821, 3495253, 13981013, 39146837, 492131669, 626349397, 27201459541, 27201459541, 297784399189, 297784399189, 3665038759253, 3665038759253, 89426945725781 ]
[ "nonn" ]
A182581
[ 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0...
[ "nonn" ]
A237327
[ 1264, 8588, 58296, 414268, 2870224, 19874388, 137663582, 978134492, 6780688008, 46959680920, 325344257654, 2311691261008, 16025622824382, 110986965737552, 768943917811452, 5463623395524888, 37876242151447784, 262316002867523360 ]
[ "nonn" ]
A199696
[ 1, 1, 2, 3, 35, 91, 7337, 25493, 9351479, 42980489, 78695113801, 584834423801, 4754839123536133, 43472885623916760, 1.887750276489058e+21, 2.101941630729253e+22, 4.675204650607654e+27, 7.700899745762614e+28 ]
[ "nonn" ]
A080199
[ 1, 7, 13, 19, 25, 31, 28, 34, 40, 46, 52, 58, 55, 61, 67, 73, 79, 85, 82, 88, 94, 100, 106, 112, 109, 115, 121, 118, 124, 130, 127, 133, 139, 136, 142, 148, 154, 160, 166, 163, 169, 175, 181, 187, 193, 190, 196, 202, 208...
[ "nonn" ]
A233981
[ 56, 1540, 92320, 14319916, 5240298896, 5022726159372, 11561322774100248, 70171451208621160000, 1.0277989190278767e+24 ]
[ "nonn" ]
A091027
[ 63, 910, 6083, 27483, 97188, 289884, 762048, 1816248, 4001613, 8264718, 16168867, 30204083, 54215070, 93980040, 157979640, 258402312, 412440315, 643939374, 985474539, 1480935379, 2188715144, 3185611044, 4571556360, 6475319760, 9061322985, 12537745038 ]
[ "nonn", "easy" ]
A025698
[ 1, 2, 4, 6, 9, 12, 16, 20, 25, 31, 37, 44, 51, 59, 67, 76, 86, 96, 107, 118, 130, 142, 155, 168, 182, 197, 212, 228, 244, 261, 278, 296, 315, 334, 354, 374, 395, 416, 438, 461, 484, 508, 532, 557, 582, 608, 634, 661, 689...
[ "nonn", "easy", "changed" ]
A253431
[ 109, 102, 120, 156, 228, 372, 660, 1236, 2388, 4692, 9300, 18516, 36948, 73812, 147540, 294996, 589908, 1179732, 2359380, 4718676, 9437268, 18874452, 37748820, 75497556, 150995028, 301989972, 603979860, 1207959636, 2415919188, 4831838292 ]
[ "nonn" ]
A160796
[ 0, 1, 8, 11, 32, 35, 56, 65, 128, 131, 152, 161, 224, 233, 296, 323, 512, 515, 536, 545, 608, 617, 680, 707, 896, 905, 968, 995, 1184, 1211, 1400, 1481, 2048, 2051, 2072, 2081, 2144, 2153, 2216, 2243, 2432, 2441, 2504, 2531, 272...
[ "nonn" ]
A081385
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 16, 17, 18, 19, 20, 26, 27, 28, 29, 30, 36, 37, 38, 39, 40, 46, 47, 48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65 ]
[ "dead" ]
A065281
[ 1, 3, 7, 6, 2, 13, 15, 12, 4, 14, 5, 25, 27, 29, 31, 24, 8, 26, 9, 28, 10, 30, 11, 49, 51, 53, 55, 57, 59, 61, 63, 48, 16, 50, 17, 52, 18, 54, 19, 56, 20, 58, 21, 60, 22, 62, 23, 97, 99, 101, 103, 105, 107, 109...
[ "nonn" ]
A289286
[ 1, 7, 11, 71, 72, 6, 2, 61, 73, 5, 3, 51, 74, 4, 41, 75, 31, 76, 21, 77, 12, 62, 63, 52, 64, 42, 65, 32, 66, 22, 67, 13, 53, 54, 43, 55, 33, 56, 23, 57, 14, 44, 45, 34, 46, 24, 47, 15, 35, 36, 25, 37, 16, 26, ...
[ "nonn", "base", "fini", "full" ]
A287604
[ 1, 2, 2, 4, 12, 24, 120, 240, 464, 480, 800, 1728, 4928, 10112, 12416, 28928, 61184, 145920, 259584, 291840, 777216, 3041280, 2447360, 11522048, 16560128, 41525248, 83714048, 127877120, 249544704, 364806144, 1418559488, 3743350784, 1340014592, 373882...
[ "nonn", "easy" ]
A294552
[ 1, 2, 12, 26, 53, 97, 171, 292, 490, 812, 1336, 2186, 3563, 5793, 9403, 15246, 24702, 40004, 64765, 104831, 169661, 274560, 444292, 718927, 1163298, 1882307, 3045690, 4928085, 7973866, 12902045, 20876008, 33778153, 54654264, 88432523, 143086896, ...
[ "nonn", "easy" ]
A189181
[ 1, 185, 4081, 251720, 10599449, 524539713, 24377674329, 1162453545201, 54868164490816, 2600517767888745, 123049732810644220, 5826272557390771000, 275793998574143730000, 1.305646188725384e+22, 6.180839252621858e+23 ]
[ "nonn" ]
A314320
[ 1, 5, 7, 13, 16, 21, 24, 27, 34, 36, 42, 43, 50, 55, 54, 63, 65, 69, 73, 75, 86, 84, 89, 94, 98, 106, 101, 110, 117, 116, 124, 123, 134, 136, 134, 146, 147, 152, 152, 156, 171, 164, 169, 176, 180, 189, 181, 191, 201, 1...
[ "nonn" ]
A346954
[ 1, 10, 65, 350, 1736, 9030, 60355, 561550, 6188996, 69919850, 781211795, 8854058850, 106994019406, 1433756147470, 21287253921635, 339206526695750, 5630710652048216, 96341917117951890, 1708973354556320800, 31787279786739737000, 623964823224788300000 ]
[ "nonn" ]
A011471
[ 1, 0, 7, 8, 9, 4, 6, 8, 8, 1, 9, 7, 6, 2, 7, 8, 0, 4, 9, 9, 2, 6, 3, 1, 4, 6, 1, 3, 2, 2, 6, 4, 3, 6, 8, 1, 4, 4, 4, 9, 6, 9, 0, 9, 3, 9, 1, 5, 7, 7, 0, 8, 9, 7, 6, 4, 5, 4, 7, 3, 2, 8, 5, 9...
[ "nonn", "cons" ]
A335180
[ 1, 1, 1, 23, 25, 619, 8083, 584929, 1273037, 202602551, 1543302079, 208247895067, 951782914315, 2366380533924005, 180256368687985150, 12651975031966999000, 55071424621489370000, 3.67062820989156e+21, 9.346827961193947e+22, 6.763848758643386e+25 ]
[ "nonn", "frac" ]
A340536
[ 2, 8, 9, 5, 5, 9, 8, 2, 9, 2, 8, 9, 5, 5, 9, 8, 2, 9, 2, 8, 9, 5, 5, 9, 8, 2, 9, 2, 8, 9, 5, 5, 9, 8, 2, 9, 2, 8, 9, 5, 5, 9, 8, 2, 9, 2, 8, 9, 5, 5, 9, 8, 2, 9, 2, 8, 9, 5, 5, 9, 8, 2, 9, 2...
[ "nonn", "base", "easy" ]
A133743
[ 1, 4, 9, 16, 25, 36, 49, 100, 144, 169, 225, 256, 361, 441, 484, 625, 729, 784, 1156, 1521, 1600, 1764, 2401, 2704, 3364, 4096, 4225, 4356, 4900, 5184, 5929, 6889, 7921, 8836, 9216, 9409, 10404, 11881, 13689, 13924, 14161, 18496, 19...
[ "nonn" ]
A040255
[ 16, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2, 32, 2,...
[ "nonn", "cofr", "easy" ]
A240125
[ 0, 0, 0, 3, 5, 138, 201, 13032, 19990, 4095612, 7026883, 4451051502 ]
[ "nonn", "more" ]
A009730
[ 1, -1, 41, -673, 41425, -2148961, 225227705, -23880701185, 3905967813793, -689701934465089, 163751563593866050, -42927084558629730000, 1.400638331658964e+22, -5.072190213708628e+24 ]
[ "sign" ]
A313808
[ 1, 5, 10, 15, 22, 25, 33, 37, 41, 49, 51, 60, 63, 67, 76, 77, 87, 89, 93, 103, 103, 114, 115, 119, 130, 129, 141, 141, 145, 157, 155, 168, 167, 171, 184, 181, 195, 193, 197, 211, 207, 222, 219, 223, 238, 233, 249, 245, 2...
[ "nonn" ]
A279150
[ 1, 0, 5, 2, 16, 7, 84, 41, 256, 127, 1344, 671, 4112, 1991, 21588, 10537, 65536, 32767, 344064, 172031, 1052672, 509951, 5526528, 2697727, 16777472, 8387711, 88081728, 44036767, 269488144, 130533319, 1414812756, 690563369, 4294967296, 2147483647, 2...
[ "nonn", "easy" ]