id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A185737
[ 1, 3, 5, 6, 14, 11, 11, 28, 30, 20, 19, 51, 60, 54, 32, 32, 88, 109, 108, 86, 46, 53, 148, 188, 196, 172, 123, 63, 87, 245, 316, 338, 312, 246, 168, 82, 142, 402, 523, 568, 538, 446, 336, 218, 104, 231, 656, 858, 940, ...
[ "nonn", "tabl" ]
A326857
[ 1, 0, 1, 0, 0, 24, 0, 504, 5040, 0, 226800, 3628800, 0, 438721920, 6227020800, 16345929600, 1127656857600, 20922789888000, 58203397324800, 6697914906009600, 121645100408832000, 655224745383936000, 51359276952023040000, 1.1240007277776077e+21 ]
[ "nonn" ]
A153226
[ 1, 1005, 1053, 1255, 2006, 2025, 2246, 2560, 3712, 4063, 4066, 4087, 5006, 5009, 5038, 5068, 5076, 5538, 6000, 6025, 6045, 7007, 7025, 7037, 8068, 8960, 9009, 9052, 10007, 10823, 11003, 11005, 12000, 12003, 12134, 12639, 14009, 14207, 14326...
[ "base", "nonn" ]
A057380
[ 48, 0, 216, 588, -96, 5832, 4800, 13068, 115776, 32448, 664440, 1736100, 1757760, 18387336, 24467184, 90326532, 379958640, 535402224, 2924464488, 7189478184, 17099776512, 73614120000, 153395478288, 528792612984 ]
[ "sign" ]
A049635
[ 2, 7, 11, 16, 23, 32, 39, 50, 63, 74, 89, 106, 117, 138, 159, 174, 199, 224, 241, 270, 299, 320, 349, 384, 409, 442, 481, 508, 549, 594, 621, 668, 707, 740, 791, 834, 869, 922, 979, 1016, 1073, 1134, 1169, 1234, 1299, 1340, ...
[ "nonn" ]
A088581
[ 1, 4, 22, 103, 427, 1642, 6016, 21325, 73813, 250960, 841450, 2790067, 9167359, 29893558, 96855124, 312088729, 1000836265, 3196219036, 10169787838, 32252755711, 101988443731, 321655860994, 1012039172392, 3177332285413, 9955641160957, 31137856397032 ]
[ "nonn", "easy" ]
A019651
[ 4, 1, 7, 4, 6, 8, 9, 0, 9, 3, 3, 1, 7, 5, 3, 9, 8, 0, 6, 4, 8, 8, 0, 3, 2, 9, 6, 5, 8, 6, 8, 1, 1, 7, 5, 9, 3, 4, 2, 5, 5, 8, 2, 2, 1, 8, 0, 6, 6, 5, 2, 4, 0, 8, 4, 3, 1, 1, 0, 5, 7, 1, 5, 9...
[ "nonn", "cons" ]
A269117
[ 0, 0, 1, 1850672, 11690616534627, 246211478304046650000, 1.4919265746950486e+28, 2.2850859342632523e+36, 7.98203800902002e+44, 5.865669863711551e+53 ]
[ "nonn" ]
A226265
[ 504, 1176, 2520, 5208, 10584, 21336, 42840, 85848, 171864, 343896, 687960, 1376088, 2752344, 5504856, 11009880, 22019928, 44040024, 88080216, 176160600, 352321368, 704642904, 1409285976, 2818572120, 5637144408, 11274288984, 22548578136, 45097156440 ]
[ "nonn" ]
A330558
[ 0, 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 1...
[ "nonn" ]
A214996
[ 3, 11, 37, 127, 433, 1479, 5049, 17239, 58857, 200951, 686089, 2342455, 7997641, 27305655, 93227337, 318298039, 1086737481, 3710353847, 12667940425, 43251054007, 147668335177, 504171232695, 1721348260425, 5877050576311, 20065505784393, 68507921984951 ]
[ "nonn", "easy" ]
A050211
[ 2, 6, 24, 120, 40, 720, 420, 5040, 3948, 40320, 38304, 2240, 362880, 396576, 50400, 3628800, 4419360, 859320, 39916800, 53048160, 13665960, 246400, 479001600, 684478080, 216339552, 9609600, 6227020800, 9464307840, 3501834336 ]
[ "nonn", "tabf" ]
A309215
[ 0, -1, 1, 4, 0, -5, 1, 8, 0, -9, 1, 12, 0, -13, 1, 16, 0, -17, 1, 20, 0, -21, 1, 24, 0, -25, 1, 28, 0, -29, 1, 32, 0, -33, 1, 36, 0, -37, 1, 40, 0, -41, 1, 44, 0, -45, 1, 48, 0, -49, 1, 52, 0, -53, 1, 56, ...
[ "sign", "easy" ]
A275034
[ 8, 144, 401, 2185, 11624, 64045, 351197, 1931619, 10581148, 58059378, 318560731, 1748917949, 9599252329, 52687857322, 289177064605, 1587227410761, 8711951100374, 47818210862037, 262463115597687, 1440600501570000 ]
[ "nonn" ]
A240197
[ 15, 358, 10017, 333607, 14022582, 733907809, 43398047802, 2752449791995, 182092505409165, 12353055792220216, 850428778272052600, 59048111282882480000, 4.120092662704004e+21 ]
[ "nonn" ]
A318338
[ 4, 10, 20, 36, 76, 160, 344, 748, 1624, 3544, 7724, 16856, 36776, 80252, 175128, 382168, 833996, 1819992, 3971720, 8667356, 18914520, 41276600, 90076716, 196571800, 428972904, 936135100, 2042900376, 4458162072, 9728917388 ]
[ "nonn" ]
A358219
[ 15, 35, 45, 70, 75, 77, 105, 135, 140, 143, 154, 165, 175, 195, 221, 225, 231, 245, 255, 280, 285, 286, 308, 315, 323, 345, 350, 375, 385, 405, 429, 435, 437, 442, 450, 455, 462, 465, 490, 495, 525, 539, 555, 560, 572, 585, ...
[ "nonn" ]
A370324
[ 1, 0, 0, 1, 6, 34, 217, 1567, 12842, 117704, 1193802, 13280778, 160843345, 2107036346, 29689965966, 447822830067, 7199604972876, 122907451783308, 2220526880775841, 42328779624824104, 849065324387063400, 17877539166289949000, 394246737752465000000 ]
[ "nonn" ]
A389881
[ 3, 4, 6, 8, 10, 9, 14, 12, 18, 5, 22, 15, 26, 7, 20, 24, 34, 21, 38, 16, 27, 2, 46, 28, 30, 13, 33, 32, 58, 25, 62, 36, 11, 17, 40, 39, 74, 19, 42, 44, 82, 35, 86, 48, 50, 23, 94, 45, 56, 55, 54, 64, 106, 51, ...
[ "nonn", "changed" ]
A282760
[ 2, 4, 6, 8, 9, 10, 12, 14, 16, 18, 19, 28, 56, 147, 566, 1301, 4288, 8576, 13088, 119396, 518800, 634825, 654780, 993476, 2109420, 3034105, 6466772, 17838948, 80148824 ]
[ "nonn", "base" ]
A169320
[ 1, 19, 342, 6156, 110808, 1994544, 35901792, 646232256, 11632180608, 209379250944, 3768826516992, 67838877305856, 1221099791505408, 21979796247097344, 395636332447752200, 7121453984059539000 ]
[ "nonn" ]
A282913
[ 1, 3, 7, 13, 25, 59, 123, 219, 411, 955, 1979, 3515, 6587, 15291, 31675, 56251, 105403, 244667, 506811, 900027, 1686459, 3914683, 8108987, 14400443, 26983355, 62634939, 129743803, 230407099, 431733691, 1002159035, 2075900859, 3686513595, 6907739067 ]
[ "nonn", "easy" ]
A191833
[ 1, 7, 10, 14, 19, 11, 16, 3, 27, 43, 46, 178, 55, 36, 100, 64, 33, 79, 147, 43, 56, 258, 16, 86, 135, 52, 31, 27, 398, 335, 33, 187, 213, 151, 43, 680, 163, 61, 38, 243, 29, 327, 39, 213, 2068, 72, 37, 799, 198, 223, ...
[ "nonn" ]
A158252
[ 287, 1152, 2595, 4616, 7215, 10392, 14147, 18480, 23391, 28880, 34947, 41592, 48815, 56616, 64995, 73952, 83487, 93600, 104291, 115560, 127407, 139832, 152835, 166416, 180575, 195312, 210627, 226520, 242991, 260040, 277667, 295872, 314655 ]
[ "nonn", "easy" ]
A181333
[ 60, 208, 252, 552, 588, 630, 656, 696, 710, 768, 816, 864, 1025, 1028, 1050, 1225, 1280, 1300, 1432, 1804, 1950, 2004, 2016, 2152, 2160, 2376, 2410, 2664, 2672, 2808, 2920, 2988, 3172, 3230, 3356 ]
[ "nonn", "easy", "base" ]
A049450
[ 0, 2, 10, 24, 44, 70, 102, 140, 184, 234, 290, 352, 420, 494, 574, 660, 752, 850, 954, 1064, 1180, 1302, 1430, 1564, 1704, 1850, 2002, 2160, 2324, 2494, 2670, 2852, 3040, 3234, 3434, 3640, 3852, 4070, 4294, 4524, 4760, 5002, 5250, ...
[ "nonn", "easy", "nice" ]
A343424
[ 1, 2, 45, 53, 177, 436, 1239, 3651, 6463, 6869, 10753, 19450, 29721, 33289, 88907, 93682, 1137232, 1516121, 4361271, 9428534, 43778664, 74738670, 271442366, 775223371, 835126289, 1736463189, 3088442241, 5054888590, 11184483614, 16993011938, 30788570768, ...
[ "nonn" ]
A158864
[ 13, 37, 73, 118, 166, 217, 313, 433, 457, 493, 538, 541, 553, 601, 613, 637, 706, 826, 853, 898, 958, 1042, 1057, 1138, 1222, 1357, 1441, 1513, 1666, 1681, 1777, 1858, 1966, 1993, 2173, 2281, 2341, 2422, 2446, 2518, 2626, 2638, 2653...
[ "base", "nonn" ]
A015822
[ 6, 14, 15, 19, 22, 27, 30, 33, 38, 42, 46, 51, 56, 62, 66, 70, 78, 86, 87, 92, 102, 118, 120, 123, 138, 142, 158, 166, 177, 184, 186, 206, 210, 213, 246, 254, 262, 264, 278, 280, 282, 303, 318, 321, 326, 330, 382, 398, 4...
[ "nonn" ]
A232946
[ 243, 19601, 1905737, 190528543, 19245039957, 1950478851269, 197901829874065, 20086980767566970, 2039053074804891400, 206993879885121650000, 2.1013146715248094e+22, 2.1331730217266537e+24 ]
[ "nonn" ]
A236851
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 17, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 51, 44, 45, 46, 47, 48, 49, 34, 51, 52, 53, 54...
[ "nonn" ]
A018272
[ 1, 3, 5, 15, 25, 75 ]
[ "nonn", "fini", "full", "easy" ]
A295059
[ 1, 4, 10, 23, 51, 108, 223, 454, 917, 1845, 3702, 7417, 14848, 29711, 59438, 118893, 237804, 475627, 951274, 1902569, 3805160, 7610344, 15220713, 30441452, 60882931, 121765890, 243531809, 487063648 ]
[ "nonn", "easy" ]
A322644
[ 2, 11, 82, 980, 10058, 100191, 999674, 10004178, 99995415, 999984900 ]
[ "nonn", "base", "more" ]
A327846
[ 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3,...
[ "nonn", "fini", "full" ]
A008397
[ 1, 126, 2898, 25886, 133506, 490014, 1433810, 3573054, 7902594, 15942206, 29896146, 52834014, 88892930, 143501022, 223622226, 338022398, 497556738, 715478526, 1007769170, 1393489566 ]
[ "nonn", "easy" ]
A390800
[ 1, 3, 6, 10, 15, 15, 28, 36, 45, 45, 66, 60, 91, 91, 105, 136, 153, 135, 190, 180, 210, 231, 276, 240, 325, 325, 378, 364, 435, 330, 496, 528, 528, 561, 595, 540, 703, 703, 741, 720, 861, 672, 946, 924, 945, 1035, 1128, 96...
[ "nonn", "easy", "new" ]
A170553
[ 1, 16, 240, 3600, 54000, 810000, 12150000, 182250000, 2733750000, 41006250000, 615093750000, 9226406250000, 138396093750000, 2075941406250000, 31139121093750000, 467086816406250000, 7006302246093750000 ]
[ "nonn" ]
A008706
[ 1, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220, 225, 230, 235, 24...
[ "nonn", "easy" ]
A111943
[ 23, 113, 1327, 31397, 370261, 2010733, 20831323, 25056082087, 2614941710599, 19581334192423, 218209405436543, 1693182318746371 ]
[ "nonn", "hard", "changed" ]
A297406
[ 2, 11, 37, 83, 197, 227, 271, 293, 347, 373, 487, 547, 853, 907, 1069, 1447, 1733, 1831, 1949, 2027, 2053, 2131, 2237, 2251, 2309, 2719, 2749, 3019, 3061, 3083, 3733, 3779, 3877, 3931, 4919, 5179, 5303, 5347, 5407, 6661, 6911, 6949, ...
[ "nonn", "look" ]
A142460
[ 1, 1, 1, 1, 12, 1, 1, 83, 83, 1, 1, 514, 1826, 514, 1, 1, 3105, 28310, 28310, 3105, 1, 1, 18656, 376615, 905920, 376615, 18656, 1, 1, 111967, 4627821, 22403635, 22403635, 4627821, 111967, 1, 1, 671838, 54377008, 478781506, 940952670, ...
[ "nonn", "tabl", "easy" ]
A387139
[ 1, 2, 8, 48, 192, 1920, 23040, 322560, 1290240, 7741440, 154828800, 3406233600, 40874803200, 1062744883200, 29756856729600, 892705701888000, 3570822807552000, 121407975456768000, 1456895705481216000, 55362036808286210000, 1.1072407361657242e+21 ]
[ "nonn" ]
A265024
[ 1, 1, 8, 6, 144, 480, 5760, 5040, 524160, 2177280, 43545600, 159667200, 6706022400, 49816166400, 2092278988800, 1307674368000, 376610217984000, 4623936565248000, 128047474114560000, 729870602452992000, 77852864261652480000, 613091306060513300000 ]
[ "nonn" ]
A177048
[ 1, 2, 3, 2, 13, 11, 13, 2, 3, 25, 5, 7, 15, 35, 35, 2, 57, 31, 13, 77, 37, 23, 7, 29, 15, 25, 3, 51, 27, 61, 5, 2, 43, 37, 57, 25, 17, 31, 13, 69, 75, 13, 49, 9, 13, 75, 99, 45, 103, 57, 37, 35, 23, 25, 23, ...
[ "nonn", "base", "easy" ]
A341991
[ 1, 1, 1, 1, 2, 2, 1, 1, 4, 12, 6, 6, 6, 6, 3, 1, 8, 8, 12, 12, 6, 6 ]
[ "nonn", "more" ]
A085739
[ 3, 9, 24, 52, 118, 209, 362, 552, 828, 1263, 1759, 2462, 3323, 4269, 5397, 6828, 8598, 10489, 12767, 15323, 18024, 21184, 24670, 28675, 33428, 38579, 43935, 49713, 55708, 62149, 70277, 78923, 88376, 98106, 109281, 120757, 133160, 146526, 16...
[ "nonn" ]
A352339
[ 0, 1, 10, 11, 20, 21, 22, 110, 111, 120, 121, 122, 210, 211, 220, 221, 1020, 1021, 1022, 1110, 1111, 1120, 1121, 1122, 1210, 1211, 1220, 1221, 2020, 2021, 2022, 2110, 2111, 2120, 2121, 2122, 2210, 2211, 2220, 2221, 2222, 10210, 1021...
[ "nonn", "base", "changed" ]
A334279
[ 0, 0, 1, 0, -3, 6, -4, 1, 0, -64, 154, -137, 58, -12, 1, 0, -2790, 7467, -7852, 4300, -1346, 244, -24, 1, 0, -205056, 593016, -698250, 448015, -175004, 43608, -6990, 700, -40, 1, 0, -22852200, 70164670, -89812001, 64407806, -29113410, ...
[ "sign", "tabf", "look" ]
A244156
[ 10, 11, 12, 13, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 52, 53, 54, 55, 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, ...
[ "nonn" ]
A081946
[ 0, 1, 3, 5, 9, 14, 19, 26, 34, 43, 52, 63, 75, 87, 101, 116, 132, 148, 166, 185, 204, 225, 247, 269, 293, 318, 344, 370, 398, 427, 456, 487, 519, 552, 585, 620, 656, 692, 730, 769, 808, 849, 891, 934, 977, 1022, 1068, 1114...
[ "nonn" ]
A384659
[ 1, 2, 4, 8, 12, 16, 24, 48, 72, 96, 144, 288, 432, 576, 720, 1440, 2160, 2880, 4320, 8640, 17280, 21600, 25920, 30240, 43200, 60480, 120960, 151200, 181440, 241920, 302400, 604800, 907200, 1209600, 1814400, 3326400, 3628800, 5443200, 635040...
[ "nonn" ]
A331746
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 18, 21, 24, 25, 22, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 33, 37, 38, 39, 40, 41, 42, 43, 31, 44, 45, 46, 38, 47, 4...
[ "nonn" ]
A164324
[ 16, 53, 185, 238, 2495, 19775, 4878937 ]
[ "nonn", "base", "more", "fini" ]
A305735
[ 0, 1, 1, 1, 1, 3, 1, 3, 2, 7, 1, 10, 1, 15, 8, 17, 1, 34, 1, 37, 16, 56, 1, 80, 6, 101, 27, 122, 1, 208, 1, 209, 57, 297, 20, 410, 1, 490, 102, 599, 1, 901, 1, 948, 194, 1255, 1, 1690, 14, 1985, 298, 2337, 1, 3...
[ "nonn" ]
A103241
[ 1, 1, 1, 15, 8, 1, 1024, 368, 27, 1, 198581, 53672, 2727, 64, 1, 85102056, 18417792, 710532, 11904, 125, 1, 68999174203, 12448430408, 386023509, 4975936, 38375, 216, 1, 95264160938080, 14734002979456, 381535651512, 3977848832, 23945000 ]
[ "nonn", "tabl", "frac" ]
A145622
[ 2, 12, 20, 40, 72, 792, 10296, 102960, 583440, 11085360, 3695120, 254963280, 1274816400, 11473347600, 332727080400, 20629078984800, 20629078984800, 20629078984800, 763275922437600, 763275922437600, 31294312819941600 ]
[ "frac", "nonn" ]
A096094
[ 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1 ]
[ "nonn", "fini", "full" ]
A236102
[ 1, 2, 3, 5, 7, 11, 15, 22, 77, 101, 17977, 10619863, 6620830889, 80630964769, 228204732751, 1171432692373, 1398341745571, 10963707205259, 15285151248481, 10657331232548840, 790738119649411300, 18987964267331666000, 74878248419470880000, 1.394313503224448e+21 ]
[ "nonn" ]
A326278
[ 0, 0, 1, 9, 34, 90, 195, 371, 644, 1044, 1605, 2365, 3366, 4654, 6279, 8295, 10760, 13736, 17289, 21489, 26410, 32130, 38731, 46299, 54924, 64700, 75725, 88101, 101934, 117334, 134415, 153295, 174096, 196944, 221969, 249305, 279090, 311466, ...
[ "nonn" ]
A246297
[ 4, 10, 16, 23, 29, 35, 41, 48, 54, 60, 67, 73, 79, 85, 92, 98, 104, 111, 117, 123, 129, 136, 142, 148, 155, 161, 167, 173, 180, 186, 192, 198, 205, 211, 217, 224, 230, 236, 242, 249, 255, 261, 268, 274, 280, 286, 293, 299,...
[ "nonn", "easy" ]
A122092
[ 1, 1, -1, -3, -3, 3, 27, 117, 513, 2655, 16623, 123057, 1047717, 10048203, 106958115, 1249780653, 15892557417, 218391870807, 3224096456823, 50878586091465, 854556716966733, 15219005900538628, 286434426954471140, 5680304836232045000, 118378714577152130000 ]
[ "sign" ]
A376795
[ 1, 10624, 13824, 1114112, 2625664, 4563999, 6554624, 16843904, 17266688, 17368064, 20003840, 27137024, 32375160, 32679360, 42993664, 44643599, 63732096, 69222464, 69424640, 70083584, 80778752, 84783104, 85458944, 90256383, 92478000, 116469899, 118063231, 1219005...
[ "nonn", "base" ]
A282911
[ 1, 11, 111, 1101, 11001, 111011, 1111011, 11011011, 110011011, 1110111011, 11110111011, 110110111011, 1100110111011, 11101110111011, 111101110111011, 1101101110111011, 11001101110111012, 111011101110111000, 1111011101110111000, 11011011101110110000 ]
[ "nonn", "easy" ]
A232527
[ 1, 2, 3, 5, 6, 9, 10, 12, 13, 14, 17, 21, 22, 30, 33, 34, 37, 42, 46, 49, 57, 58, 65, 66, 69, 70, 73, 77, 78, 82, 85, 90, 93, 97, 102, 105, 114, 117, 130, 133, 138, 141, 142, 145, 154, 165, 177, 190, 193, 198, 205, ...
[ "nonn" ]
A275589
[ 1, 4, 6, 8, 9, 1, 0, 1, 1, 1, 1, 1, 4, 1, 1, 6, 1, 1, 8, 1, 9, 0, 1, 4, 6, 8, 9, 0, 1, 4, 6, 8, 9, 4, 0, 4, 1, 4, 4, 4, 4, 4, 4, 6, 4, 4, 8, 4, 9, 0, 1, 4, 6, 8, 9, 6, 0, 6, 1, 6, 6, 6, 4, 6...
[ "base", "nonn" ]
A294215
[ 1, 1, 5, 31, 265, 2501, 29461, 383755, 5721521, 93393865, 1683745381, 32835673751, 693498302905, 15671281854541, 378500195728565, 9704429057721092, 263513260349418720, 7544370749942882000, 227236831102901600000, 7.177550671651275e+21 ]
[ "nonn" ]
A326683
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 4, 4, 6, 9, 9, 12, 16, 20, 21, 27, 26, 36, 38, 47, 49, 68, 62, 86, 88, 111, 107, 145, 133, 183, 173, 220, 206, 287, 247, 341, 311, 411, 3...
[ "nonn" ]
A050216
[ 2, 2, 5, 6, 15, 9, 22, 11, 27, 47, 16, 57, 44, 20, 46, 80, 78, 32, 90, 66, 30, 106, 75, 114, 163, 89, 42, 87, 42, 100, 354, 99, 165, 49, 299, 58, 182, 186, 128, 198, 195, 76, 356, 77, 144, 75, 463, 479, 168, 82, 166,...
[ "nonn", "look" ]
A380800
[ 1, 8, 142, 4088, 165576, 8711752, 566093104, 43882188408, 3957135262720, 407285038758536, 47138933615042300, 6062383519783849000, 857919091977394600000, 1.3251127884371414e+23, 2.2185703881021997e+25, 4.002648943012304e+27, 7.742121309314457e+29 ]
[ "nonn" ]
A247232
[ 1, 3, 1, 19, 9, 1, 233, 103, 18, 1, 4851, 1735, 325, 30, 1, 158175, 43201, 7320, 785, 45, 1, 7724333, 1567783, 218491, 22960, 1610, 63, 1, 550898367, 82142943, 8856974, 818461, 59570, 2954, 84, 1, 56536880923, 6187176225, 496368181, 37205...
[ "nonn", "tabl" ]
A025218
[ 1, 3, 5, 7, 9, 12, 15, 18, 21, 24, 28, 31, 35, 39, 43, 47, 51, 56, 60, 65, 69, 74, 79, 84, 89, 94, 100, 105, 111, 116, 122, 128, 133, 139, 145, 151, 158, 164, 170, 177, 183, 190, 196, 203, 210, 217, 223, 230, 238, 245,...
[ "nonn" ]
A171085
[ 2, 1, 3, 5, 4, 6, 7, 8, 9, 10, 12, 11, 14, 15, 16, 13, 18, 20, 21, 22, 24, 17, 25, 26, 27, 28, 30, 32, 19, 33, 34, 35, 36, 38, 39, 40, 23, 42, 44, 45, 46, 48, 49, 50, 51, 29, 52, 54, 55, 56, 57, 58, 60, 62, 6...
[ "nonn" ]
A276936
[ 2, 6, 9, 10, 14, 18, 22, 26, 30, 34, 36, 38, 42, 45, 46, 50, 54, 58, 62, 63, 66, 70, 72, 74, 78, 82, 86, 90, 94, 98, 99, 102, 106, 110, 114, 117, 118, 122, 125, 126, 130, 134, 138, 142, 144, 146, 150, 153, 154, 158, ...
[ "nonn" ]
A176430
[ 3, 21, 903, 1631721, 5325028475403, 5.671185652771092e+25, 8.275332366225998e+103 ]
[ "nonn" ]
A167474
[ 17, 431, 1151, 1979, 6029, 9323, 11321, 13877, 17891, 41597, 45863, 49193, 62639, 66851, 68543, 91151, 99719, 113147, 117413, 132533, 136277, 151631, 153269, 159839, 174491, 178397, 199799, 411101, 419183, 419777, 437543, 451637 ]
[ "nonn", "base", "less" ]
A170027
[ 1, 18, 306, 5202, 88434, 1503378, 25557426, 434476242, 7386096114, 125563633938, 2134581776946, 36287890208082, 616894133537394, 10487200270135698, 178282404592306880, 3030800878069217000, 51523614927176690000 ]
[ "nonn" ]
A087356
[ 2, 3, 5, 13, 17, 8209, 8273, 10321, 10337, 10369, 11393, 34359749761, 34359815297, 34393369729, 34460478593, 34461002881, 34461006977 ]
[ "nonn" ]
A161329
[ 1, 3, 5, 7, 13, 11, 17, 15, 21, 23, 25, 27, 33, 27, 25, 15, 25, 35, 41, 55, 53, 59, 61, 59, 65, 63, 57, 47, 37, 47, 65, 71, 97, 95, 105, 95, 89, 83, 81, 87, 93, 79, 73, 79, 89, 107, 113, 119, 113, 115, 117, 135, ...
[ "nonn" ]
A242879
[ 0, 0, 0, 2, 2, 2, 3, 2, 2, 3, 4, 2, 2, 3, 2, 3, 4, 7, 2, 2, 3, 4, 2, 3, 4, 13, 6, 7, 11, 13, 10, 11, 2, 3, 4, 18, 6, 7, 2, 3, 4, 2, 2, 3, 4, 6, 6, 2, 3, 2, 2, 3, 4, 2, 2, 3, 4, 6, 6, 2, 3, 2, ...
[ "nonn" ]
A130619
[ 0, 1, 2, 6, 25, 127, 768, 5401, 43335, 390783, 3913231, 43088876, 517457295, 6730858066, 94275101800, 1414643984295, 22641034606786, 384991863417162, 6931268185493211, 131716736558977800, 2634719723042973000 ]
[ "nonn", "easy" ]
A198256
[ 1, 5, 46, 485, 5626, 69062, 882540, 11614437, 156343330, 2142556130, 29791689148, 419260001030, 5960334608788, 85469709312860, 1234797737654296, 17955907741675748, 262607675818816060, 3860239468267648000, 57002176852356800000, 845159480056345400000 ]
[ "nonn", "changed" ]
A201184
[ 3, 59, 19211, 56003, 275131, 384107, 448003, 596291, 1365787, 1668299, 5814091, 7000003, 14680067, 25565851, 35619139, 43606531, 56000003, 72521627, 106770947, 140865539, 185245147, 196661251, 208537003, 332065499, 337599811 ]
[ "nonn", "easy" ]
A369112
[ -1, 3, 4, 6, 8, 12, -1, 24, 30, 32, -1, 48, 60, -1, 72, 224, 168, 128, -1, 180, 192, 390, -1, 240, -1, 972, 360, 384, 420, 432, 480, -1, -1, 720, 1280, 840, 864, -1, 2112, -1, 1512, 1152, 1260, -1, 1440, 3584, 3120, -1, ...
[ "sign" ]
A375138
[ 41, 81, 83, 105, 145, 161, 163, 165, 166, 167, 169, 209, 211, 233, 289, 290, 291, 297, 321, 323, 325, 326, 327, 329, 331, 332, 333, 334, 335, 337, 339, 361, 401, 417, 419, 421, 422, 423, 425, 465, 467, 489, 545, 553, 577, 578,...
[ "nonn" ]
A348176
[ 1, 2, 4, 5, 9, 12, 30, 165, 8021811, 1071065190, 1613902650, 1797595815015, 633925574060895 ]
[ "nonn", "more" ]
A061860
[ 1, 2, 4, 11, 28, 152, 726, 5268, 40438, 365944, 3628810, 39974466, 479001612, 6228256404, 87178339984, 1307706805928, 20922789888016, 355688409760972, 6402373705728018, 121645133931170030, 2432902008232456700 ]
[ "nonn" ]
A163523
[ 1, 3, 3, 4, 3, 6, 3, 5, 4, 6, 3, 8, 3, 6, 6, 6, 3, 8, 3, 8, 6, 6, 3, 10, 4, 6, 5, 8, 3, 11, 3, 7, 6, 6, 6, 11, 3, 6, 6, 10, 3, 11, 3, 8, 8, 6, 3, 12, 4, 8, 6, 8, 3, 10, 6, 10, 6, 6, 3, 15, 3, 6,...
[ "nonn", "easy" ]
A273665
[ 0, 1, 2, 3, 5, 7, 4, 11, 6, 15, 9, 23, 10, 13, 14, 31, 19, 47, 21, 27, 29, 63, 39, 95, 8, 43, 22, 55, 59, 127, 12, 79, 30, 191, 17, 87, 18, 45, 46, 111, 119, 255, 25, 159, 61, 383, 35, 175, 20, 37, 26, 91, 93, ...
[ "nonn", "base" ]
A155308
[ 1, 13, 37, 112, 595, 3710, 30281, 253489, 2990675, 42651723, 721885534, 15178835272 ]
[ "nonn" ]
A144515
[ 1, 2, 1, 2, 0, 1, 3, 1, 0, 1, 2, 0, 0, 0, 1, 4, 1, 1, 0, 0, 1, 2, 0, 0, 0, 0, 0, 1, 4, 1, 0, 1, 0, 0, 0, 1, 3, 0, 1, 0, 0, 0, 0, 0, 1, 4, 1, 0, 0, 1, 0, 0, 0, 0, 1 ]
[ "nonn", "tabl" ]
A245117
[ 1, 3, 9, 55, 417, 4063, 47089, 638815, 9893057, 172430463, 3338825169, 71119417375, 1652583598497, 41600978876863, 1127787743366449, 32757802728304736, 1014917534672868700, 33409942701676460000, 1.1645128202031746e+21, 4.284438553842475e+22, 1.6592810604941606e+24 ]
[ "nonn" ]
A004356
[ 1, 12, 153, 2024, 27405, 376992, 5245786, 73629072, 1040465790, 14783142660, 210980549208, 3022285436352, 43430966148115, 625806790696080, 9038619861406740, 130815226545884700, 1896724514424115500, 27545633466126920000, 400617826787021360000, 5.834104414094384e+21 ]
[ "nonn", "easy" ]
A104001
[ 2, 4, 6, 8, 18, 24, 16, 54, 96, 120, 32, 162, 384, 600, 720, 64, 486, 1536, 3000, 4320, 5040, 128, 1458, 6144, 15000, 25920, 35280, 40320, 256, 4374, 24576, 75000, 155520, 246960, 322560, 362880, 512, 13122, 98304, 375000, 933120, 172...
[ "nonn", "tabl" ]
A191011
[ 0, 1, -1, -1, 6, 9, -120, -225, 5040, 11025, -362880, -893025, 39916800, 108056025, -6227020800, -18261468225, 1307674368000, 4108830350625, -355687428096000, -1187451971330625, 121645100408832000 ]
[ "sign" ]
A264935
[ 6, 11, 14, 16, 17, 20, 23, 24, 34, 38, 39, 42, 48, 49, 58, 66, 74, 77, 83, 87, 102, 104, 110, 120, 136, 145, 156, 158, 172, 177, 178, 183, 195, 201, 233, 235, 250, 256, 260, 273, 277, 282, 288, 293, 306, 319, 325, 329, 3...
[ "nonn", "base" ]
A102323
[ 1, 1, 1, 1, 4, 4, 1, 13, 33, 33, 1, 40, 205, 436, 436, 1, 121, 1146, 4198, 8122, 8122, 1, 364, 6094, 35480, 108578, 197920, 197920, 1, 1093, 31563, 279923, 1257125, 3434245, 6007205, 6007205, 1, 3280, 161095, 2120556, 13434681, 512113...
[ "nonn", "tabl" ]
A179619
[ 1, 13, 135, 1357, 13579, 135801, 1358023, 13580245, 135802467, 1358024689, 13580246911, 135802469133, 1358024691355, 13580246913577, 135802469135799, 1358024691358021, 13580246913580244, 135802469135802460, 1358024691358024700, 13580246913580247000 ]
[ "nonn", "easy" ]
A191127
[ 1, 2, 3, 6, 9, 10, 18, 22, 27, 30, 34, 38, 54, 66, 70, 81, 86, 90, 102, 106, 114, 118, 134, 150, 162, 198, 210, 214, 243, 258, 262, 270, 278, 306, 318, 322, 342, 354, 358, 402, 406, 422, 450, 454, 470, 486, 534, 594, 598...
[ "nonn" ]
A377553
[ 1, 2, 14, 174, 3176, 77010, 2336892, 85316714, 3644408336, 178412603778, 9851421767060, 605826315779322, 41068369222584024, 3042849619010389000, 244657525386435170000, 2.121738747644266e+22, 1.9742199069220468e+24, 1.9619109390129275e+26, 2.0739322455031606e+28 ]
[ "nonn" ]