id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A362862
[ 1, 0, 13, 629, 58993, 8998399, 2035844461, 640881617123, 267995012680641, 143734541641235570, 96200314049944370000, 7.859928799043328e+22, 7.699340891616869e+25, 8.90723572578402e+28 ]
[ "nonn" ]
A054787
[ 0, 2, 7, 4, 21, 6, 35, 14, 9, 56, 11, 70, 13, 84, 49, 16, 105, 18, 119, 20, 133, 28, 23, 154, 25, 168, 27, 182, 147, 30, 203, 32, 217, 34, 231, 42, 37, 252, 39, 266, 41, 280, 245, 44, 301, 46, 315, 48, 329, 98, 51, ...
[ "nice", "nonn" ]
A068468
[ 5, 1, 4, 5, 1, 0, 1, 0, 1, 5, 0, 8, 3, 9, 3, 1, 2, 3, 0, 7, 3, 2, 8, 1, 1, 8, 6, 7, 7, 2, 7, 8, 9, 6, 1, 6, 5, 0, 6, 5, 6, 5, 7, 4, 6, 9, 0, 7, 1, 2, 8, 0, 1, 8, 3, 3, 7, 5, 4, 3, 4, 5, 7, 2...
[ "cons", "easy", "nonn" ]
A287449
[ 2, 6, 7, 10, 14, 18, 21, 23, 25, 30, 32, 34, 38, 42, 43, 46, 50, 54, 55, 59, 63, 65, 69, 70, 75, 77, 79, 82, 86, 90, 92, 96, 97, 102, 104, 106, 110, 114, 115, 118, 122, 126, 129, 131, 133, 138, 140, 142, 146, 150, 15...
[ "nonn", "easy" ]
A373449
[ 1, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 3, 3, 1, 0, 1, 4, 6, 5, 1, 0, 1, 5, 10, 14, 7, 1, 0, 1, 6, 15, 30, 25, 11, 1, 0, 1, 7, 21, 55, 65, 53, 16, 1, 0, 1, 8, 28, 91, 140, 173, 100, 26, 1, 0, 1, 9, 36, 140, ...
[ "nonn", "tabl" ]
A389879
[ 2, 1, 4, 12, 56, 540, 64, 32, 280, 460, 28, 756, 2304, 1188, 252, 216, 396, 6732, 900, 792, 2916, 20484, 1332, 2700, 15084, 3384, 3780, 432, 8676, 25776, 323676, 46476, 19800, 4500, 21600, 37800, 19980, 180, 9000, 53676, 43200, 24480,...
[ "nonn" ]
A160391
[ 1, 11, -391, -15565, 429361, 36600091, -696563159, -120097674301, 1175407944545, 504849561326891, 137065366132441, -2583322034966225000, -29188494526686384000, 1.5550857143038937e+22, 3.6533804814305286e+23, -1.0744982547172952e+26 ]
[ "sign", "frac" ]
A075389
[ 1, 2, 3, 5, 6, 9, 8, 13, 14, 16, 14, 22, 18, 26, 26, 30, 22, 35, 25, 39, 39, 43, 31, 50, 44, 51, 50, 57, 40, 65, 43, 67, 62, 68, 68, 79, 53, 79, 79, 90, 58, 94, 62, 94, 95, 95, 67, 110, 91, 109, 102, 113, 76, 1...
[ "nonn" ]
A138760
[ 5491, 10982, 16473, 21964, 27455, 32946, 38437, 43928, 49419, 51361, 54910, 60401, 65892, 71383, 76874, 82365, 87856, 93347, 98838, 102722, 104329, 109820, 115311, 120802, 126293, 131784, 137275, 142766, 148257, 153748, 154083, 159239, 164730 ]
[ "nonn" ]
A201463
[ 6, 10, 12, 14, 15, 18, 21, 22, 24, 26, 28, 33, 35, 36, 39, 48, 52, 56, 65, 72, 88, 91, 99, 117, 144 ]
[ "nonn", "fini", "full" ]
A306172
[ 1, 2, 2, 3, 5, 3, 5, 9, 9, 5, 8, 21, 13, 21, 8, 13, 53, 30, 30, 53, 13, 21, 105, 66, 93, 66, 105, 21, 34, 237, 123, 249, 249, 123, 237, 34, 55, 577, 252, 544, 832, 544, 252, 577, 55, 89, 1205, 535, 1372, 1956, 1956, ...
[ "nonn", "tabl" ]
A178083
[ 1, 148, 16570, 32614, 66109, 102250, 106870, 124636, 146140, 191773, 305887, 415591, 421828, 552700, 834415, 1013440, 1176505, 1190050, 1306432, 1572082, 1576009, 1850437, 1873684, 1912954, 1921144, 2004997, 2103613, 2376340 ]
[ "nonn" ]
A157040
[ 119, 480, 1083, 1928, 3015, 4344, 5915, 7728, 9783, 12080, 14619, 17400, 20423, 23688, 27195, 30944, 34935, 39168, 43643, 48360, 53319, 58520, 63963, 69648, 75575, 81744, 88155, 94808, 101703, 108840, 116219, 123840, 131703, 139808 ]
[ "nonn", "easy" ]
A186686
[ 1, 2, 1, 3, 4, 1, 4, 10, 6, 1, 3, 20, 21, 8, 1, 1, 31, 56, 36, 10, 1, 0, 38, 120, 120, 55, 12, 1, 0, 38, 213, 322, 220, 78, 14, 1, 0, 30, 321, 724, 705, 364, 105, 16, 1, 0, 17, 414, 1400, 1897, 1353, 560, 136, ...
[ "nonn", "tabl", "easy" ]
A008601
[ 0, 19, 38, 57, 76, 95, 114, 133, 152, 171, 190, 209, 228, 247, 266, 285, 304, 323, 342, 361, 380, 399, 418, 437, 456, 475, 494, 513, 532, 551, 570, 589, 608, 627, 646, 665, 684, 703, 722, 741, 760, 779, 798, 817, 836, 855, 8...
[ "nonn", "easy" ]
A233949
[ 44, 226, 226, 1150, 2108, 1150, 5874, 19484, 19484, 5874, 29970, 180972, 328508, 180972, 29970, 152974, 1679760, 5601514, 5601514, 1679760, 152974, 780718, 15596008, 95457842, 176523392, 95457842, 15596008, 780718, 3984650, 144797048 ]
[ "nonn", "tabl" ]
A267211
[ 1, 1, 5, 2, 7, 7, 10, 5, 13, 12, 13, 11, 18, 15, 19, 16, 21, 21, 24, 19, 27, 26, 27, 25, 32, 29, 33, 30, 35, 35, 38, 33, 41, 40, 41, 39, 46, 43, 47, 44, 49, 49, 52, 47, 55, 54, 55, 53, 60, 57, 61, 58, 63, 63, ...
[ "nonn", "easy" ]
A303257
[ 0, 361, 5918, 55624, 1105676, 19457754, 322544617, 5622650429, 96079232228, 1646124445916, 28299650557400, 485285360460841, 8326738600567856, 142906680823826200, 2452047535254667300, 42076285291701650000 ]
[ "nonn" ]
A058400
[ 1, 2, 1, 3, 2, 1, 5, 4, 3, 1, 7, 6, 5, 3, 1, 11, 10, 9, 7, 4, 1, 15, 14, 13, 11, 8, 4, 1, 22, 21, 20, 18, 15, 10, 5, 1, 30, 29, 28, 26, 23, 18, 12, 5, 1, 42, 41, 40, 38, 35, 30, 23, 14, 6, 1, 56, 55, 54...
[ "nonn", "tabl" ]
A335067
[ 1, 179, 239, 359, 719, 839, 1259, 3359, 5039, 10079, 25199, 27719, 50399, 55439, 110879, 166319, 360359, 665279, 831599, 1081079, 1441439, 2162159, 3603599, 4324319, 12972959, 21621599, 43243199, 61261199, 73513439, 122522399, 205405199, 245044799, 410...
[ "nonn" ]
A095437
[ 21, 23, 25, 30, 33, 41, 111, 210, 10101, 111111111111111110000 ]
[ "nonn", "fini", "full" ]
A278024
[ 1, 1, 1, 3, 5, 13, 37, 107, 341, 1141, 4021, 14831, 57017, 227617, 941305, 4020455, 17705753, 80215513, 373370329, 1782362219, 8716939229, 43615569829, 223069903933, 1164867074483, 6206075782925, 33702629832685, 186436337623597, 1049745170246327, 6012759489160...
[ "nonn" ]
A262995
[ 1, 1, 1, 3, 3, 3, 3, 5, 3, 6, 3, 6, 4, 6, 4, 7, 4, 6, 6, 6, 4, 8, 5, 6, 6, 7, 5, 8, 4, 9, 5, 7, 9, 5, 7, 8, 6, 9, 5, 9, 7, 7, 8, 8, 6, 8, 8, 8, 6, 7, 10, 8, 4, 12, 6, 8, 7, 9, 6, 10, 6, 8, 10,...
[ "nonn" ]
A200879
[ 1, 3, 9, 11, 33, 41, 99, 101, 123, 251, 271, 303, 369, 451, 753, 813, 909, 1111, 1353, 2259, 2439, 2761, 2981, 3333, 3541, 4059, 4141, 5051, 8283, 8943, 9091, 9999, 10291, 10623, 11111, 12423, 15153, 21401, 24849, 25351, 25601, 26829,...
[ "fini", "nonn" ]
A173921
[ 0, 1, 1, 4, 2, 5, 6, 12, 4, 7, 9, 14, 12, 19, 21, 32, 8, 11, 17, 22, 19, 27, 30, 40, 24, 35, 37, 52, 41, 57, 60, 80, 16, 19, 33, 38, 34, 41, 51, 60, 40, 51, 57, 70, 64, 81, 85, 104, 48, 67, 69, 92, 76, 99, 10...
[ "nonn" ]
A274384
[ 1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17, 19, 20, 22, 23, 25, 26, 28, 29, 31, 32, 34, 37, 40, 43, 46 ]
[ "nonn", "fini", "full" ]
A119473
[ 1, 1, 1, 2, 2, 3, 4, 1, 5, 8, 3, 8, 15, 8, 1, 13, 28, 19, 4, 21, 51, 42, 13, 1, 34, 92, 89, 36, 5, 55, 164, 182, 91, 19, 1, 89, 290, 363, 216, 60, 6, 144, 509, 709, 489, 170, 26, 1, 233, 888, 1362, 1068, 446, 9...
[ "nonn", "tabf" ]
A015568
[ 0, 1, 7, 59, 483, 3971, 32627, 268099, 2202963, 18101731, 148741747, 1222209539, 10042884243, 82522285091, 678084838067, 5571816717379, 45783565402323, 376203124990051, 3091257528953587, 25400833952575620, 208718412957565220, 1715037230228712700, 14092444741176640000 ]
[ "nonn", "easy" ]
A024019
[ 1, 1, -508, -19675, -262128, -1953093, -10077632, -40353479, -134217472, -387419977, -999998976, -2357945643, -5159776256, -10604491181, -20661030400, -38443326607, -68719411200, -118587745425, -198359028224, -322687173491, -511998951424, -794277949429 ]
[ "sign", "easy" ]
A338268
[ 1, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 2, 0, 4, 0, 0, 0, 2, 0, 6, 0, 0, 0, 2, 0, 8, 0, 0, 0, 4, 0, 12, 0, 2, 0, 0, 6, 0, 0, 18, 0, 2, 0, 0, 8, 0, 0, 26, 0, 2, 0, 0, 14, 0, 0, 40, 0, 4, 0...
[ "nonn", "tabf" ]
A003624
[ 4, 8, 9, 16, 21, 25, 27, 32, 35, 36, 39, 49, 50, 55, 57, 63, 64, 65, 75, 77, 81, 85, 93, 98, 100, 111, 115, 119, 121, 125, 128, 129, 133, 143, 144, 155, 161, 169, 171, 175, 183, 185, 187, 189, 201, 203, 205, 209, 215, ...
[ "nonn" ]
A145317
[ 79, 10288, 16181, 306998, 394021 ]
[ "nonn" ]
A204628
[ 393216, 425257068, 459972403614, 497525810748759, 538145459458960000, 582081449451902340000, 6.296045215198603e+23, 6.810075358790682e+26, 7.366072638878396e+29 ]
[ "nonn" ]
A057569
[ 0, 2, 3, 9, 11, 21, 24, 38, 42, 60, 65, 87, 93, 119, 126, 156, 164, 198, 207, 245, 255, 297, 308, 354, 366, 416, 429, 483, 497, 555, 570, 632, 648, 714, 731, 801, 819, 893, 912, 990, 1010, 1092, 1113, 1199, 1221, 1311, 1334,...
[ "nonn", "easy" ]
A018213
[ 1, 5, 30, 110, 365, 1001, 2520, 5720, 12190, 24310, 46252, 83980, 147070, 248710, 408760, 653752, 1021735, 1562275, 2343770, 3453450, 5008003, 7153575, 10080720, 14024400, 19284460, 26225628, 35304920, 47071640 ]
[ "nonn", "easy" ]
A120900
[ 1, 1, 2, 6, 19, 62, 209, 722, 2539, 9054, 32654, 118876, 436171, 1611067, 5984943, 22344455, 83786875, 315397144, 1191324649, 4513742858, 17149228138, 65318912291, 249356597492, 953902701488, 3656057618727, 14037222220896 ]
[ "nonn" ]
A087061
[ 0, 1, 1, 2, 1, 2, 3, 2, 2, 3, 4, 3, 2, 3, 4, 5, 4, 3, 3, 4, 5, 6, 5, 4, 3, 4, 5, 6, 7, 6, 5, 4, 4, 5, 6, 7, 8, 7, 6, 5, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 5, 6, 7, 8, 9, 10, 9, 8, 7, 6, 5, 6, 7, ...
[ "nonn", "tabl", "nice", "base", "look" ]
A255387
[ 281, 59221, 7.694497019198466e+26 ]
[ "nonn" ]
A050681
[ 8, 14, 16, 19, 21, 23, 37, 57, 67, 70, 79, 88, 106 ]
[ "nonn", "base", "hard", "less", "more" ]
A150450
[ 1, 2, 7, 24, 103, 424, 1928, 8485, 39919, 182674, 875189, 4099917, 19871014, 94540075, 461747592, 2220650729, 10904091721, 52849791555, 260512174353, 1269993223694, 6278074553336, 30741443230136, 152296195189312, 748319291781673, 3713444087547101, 18296328957924550,...
[ "nonn", "walk" ]
A320103
[ 1, 2, 2, 3, 27, 2, 1, 19953, 1, 3, 4, 5, 1, 100543, 4, 5, 1375, 6, 67, 100129349439, 35, 22, 7200537, 11, 90, 733, 1.6533337149726958e+54 ]
[ "nonn" ]
A229153
[ 6, 10, 14, 15, 21, 22, 24, 26, 30, 33, 34, 35, 38, 39, 40, 42, 46, 51, 54, 55, 56, 57, 58, 60, 62, 65, 66, 69, 70, 74, 77, 78, 82, 84, 85, 86, 87, 88, 90, 91, 93, 94, 95, 96, 102, 104, 105, 106, 110, 111, 114, 115,...
[ "nonn" ]
A273923
[ 0, 0, 0, 0, 0, 1, 3, 52 ]
[ "nonn", "hard", "more" ]
A248333
[ 0, 0, 0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 8, 9, 9, 10, 11, 12, 12, 13, 14, 15, 16, 16, 17, 18, 19, 20, 20, 21, 22, 23, 24, 25, 25, 26, 27, 28, 29, 30, 30, 31, 32, 33, 34, 35, 36, 36, 37, 38, 39, 40, 41, ...
[ "nonn" ]
A341110
[ 1, 2, 48, 288, 138240, 1382400, 2090188800, 29262643200, 56184274944000, 1011316948992000, 1334938372669440000, 29368644198727680000, 1.1545401407403826e+25, 3.0018043659249946e+26, 5.043031334753991e+28, 1.5129094004261974e+30 ]
[ "nonn" ]
A373123
[ 1, 5, 18, 63, 218, 891, 3676, 15137, 60580, 238672, 953501, 3826167, 15308186, 61204878, 244709252, 979285522, 3917052950, 15664274802, 62663847447, 250662444349, 1002632090376, 4010544455838, 16042042419476, 64168305037147, 256675237863576 ]
[ "nonn" ]
A372047
[ 1, 1, 6, 0, 0, 1, 4, 4, 1, 3, 1, 1, 6, 9, 8, 4, 7, 7, 5, 2, 9, 4, 1, 5, 2, 4, 1, 6, 9, 4, 2, 8, 2, 6, 0, 1, 1, 3, 8, 7, 2, 1, 0, 2, 7, 0, 8, 3, 6, 3, 2, 3, 5, 0, 8, 9, 9, 3, 0, 4, 7, 9, 3, 3...
[ "nonn", "cons" ]
A378029
[ 0, 2, 6, 8, 10, 20, 22, 42, 54, 58, 110, 156, 162, 166, 168, 294, 342, 506, 812, 930, 1210, 1332, 1458, 2028, 2162, 2756, 3422, 3660, 4422, 4970, 6162, 6498, 6806, 7832, 10100, 11342, 11638, 13310, 16002, 17030, 19182, 22052, 23548,...
[ "nonn" ]
A115479
[ 18, 6778629, 25015702424562604, 1.2515777524966178e+33, 6.550102543188102e+59 ]
[ "nonn" ]
A103603
[ 7, 29, 41, 79, 119, 137, 143, 169, 187, 241, 259, 263, 281, 307, 313, 319, 341, 361, 377, 403, 427, 439, 449, 461, 467, 493, 547, 553, 557, 587, 673, 689, 701, 703, 719, 721, 731, 781, 791, 847, 887, 901, 911, 931, 943, 979, ...
[ "base", "nonn" ]
A271224
[ 2, 1, 0, 2, 2, 0, 2, 1, 2, 2, 2, 0, 1, 0, 2, 1, 2, 1, 1, 2, 0, 0, 2, 1, 1, 1, 0, 0, 0, 2, 2, 2, 0, 1, 2, 1, 0, 2, 0, 0, 2, 0, 2, 1, 0, 2, 1, 0, 0, 0, 1, 2, 0, 2, 1, 0, 2, 0, 2, 2, 1 ]
[ "nonn", "base", "easy" ]
A120450
[ 0, 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 4, 3, 3, 3, 5, 4, 4, 4, 4, 4, 4, 6, 3, 5, 4, 4, 4, 6, 5, 5, 5, 5, 7, 5, 6, 6, 6, 6, 7, 5, 6, 7, 6, 7, 9, 8, 8, 6, 7, 7, 8, 7, 9, 6, 10, 8, 6, 9, 7, 9, ...
[ "nonn" ]
A212264
[ 1, 1, 2, 2, 3, 4, 6, 9, 12, 18, 26, 37, 52, 77, 110, 156, 226, 324, 464, 668, 960, 1370, 1977, 2834, 4060, 5832, 8371, 11993, 17219, 24695, 35408, 50837, 72880, 104619, 150065, 215343, 308868, 443380, 635753, 912581, 1308771, 1878238,...
[ "nonn" ]
A323988
[ 1, 2, 5, 10, 23, 46, 102, 204, 443, 886, 1898, 3796, 8054, 16108, 33932, 67864, 142163, 284326, 592962, 1185924, 2464226, 4928452, 10209620, 20419240, 42190558, 84381116, 173962532, 347925064, 715908428, 1431816856, 2941192472, 5882384944, 12065310083,...
[ "nonn" ]
A347178
[ 3, 4, 1, 1, 6, 3, 9, 0, 1, 9, 1, 4, 0, 0, 9, 6, 6, 3, 6, 8, 4, 7, 4, 1, 8, 6, 9, 8, 5, 5, 5, 2, 4, 1, 2, 8, 4, 4, 5, 5, 9, 4, 2, 9, 0, 9, 4, 8, 9, 9, 9, 2, 8, 8, 9, 0, 1, 8, 6, 4, 3, 0, 3, 3...
[ "nonn", "cons" ]
A019915
[ 3, 0, 5, 7, 3, 0, 6, 8, 1, 4, 5, 8, 6, 6, 0, 3, 5, 5, 7, 3, 4, 5, 4, 1, 9, 5, 8, 9, 9, 6, 5, 5, 0, 7, 1, 6, 1, 4, 6, 2, 5, 0, 2, 2, 1, 3, 8, 7, 1, 1, 6, 6, 9, 3, 6, 7, 0, 6, 8, 0, 5, 5, 7, 2...
[ "nonn", "cons" ]
A228201
[ 2, 3, 17, 29, 31, 43, 47, 53, 61, 67, 71, 73, 79, 83, 89, 97, 127, 131, 139, 163, 179, 181, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 271, 277, 311, 313, 317, 337, 347, 367, 373, 379, 383, 389, 397, ...
[ "nonn" ]
A105170
[ 11, 17, 29, 41, 59, 67, 71, 73, 89, 97, 103, 127, 137, 149, 151, 163, 173, 179, 181, 191, 193, 197, 223, 227, 229, 233, 239, 241, 257, 263, 271, 277, 311, 317, 331, 347, 349, 353, 359, 367, 373, 379, 389, 397, 409, 419, 433,...
[ "nonn" ]
A133989
[ 0, 1, 1, 1, 2, 1, 2, 1, 2, 2, 2, 3, 2 ]
[ "more", "nonn" ]
A173332
[ 1, 1, 1, 2, 2, 3, 4, 4, 6, 6, 7, 9, 8, 11, 11, 12, 15, 14, 18, 18, 20, 23, 22, 27, 26, 29, 32, 31, 37, 36, 39, 44, 41, 50, 48, 51, 59, 52, 66, 61, 65, 76, 64, 85, 75, 81, 96, 76, 108, 90, 99 ]
[ "sign", "easy" ]
A128162
[ 0, 0, 1, 0, 3, 1, 3, 9, 31, 34, 37, 81, 137, 347, 487, 690, 355, 1369, 2001, 1926, 5331, 1369, 4823, 8289, 74043, 77951, 188571, 284781, 490766, 166409, 1333373, 1803615, 1516839, 914943, 3619092, 3987873, 17604245, 8506938, 57277423, 247...
[ "nonn" ]
A055504
[ 0, 0, 0, 0, 0, 15, 110, 455, 1400, 3570, 7980, 16170, 30360, 53625, 90090, 145145, 225680, 340340, 499800, 717060, 1007760, 1390515, 1887270, 2523675, 3329480, 4338950, 5591300, 7131150, 9009000, 11281725, 14013090, 17274285, 21144480 ]
[ "nonn", "easy" ]
A346480
[ 2, 0, 0, 9, 0, 30, 0, 27, 25, 42, 0, 45, 0, 66, 70, 45, 0, 75, 0, 99, 110, 78, 0, 3, 49, 102, 125, 135, 0, 60, 0, 81, 130, 114, 154, -39, 0, 138, 170, 15, 0, 60, 0, 261, 175, 174, 0, 117, 121, 231, 190, 297, 0, ...
[ "sign" ]
A297624
[ 2, 3, 6, 216, 285 ]
[ "nonn", "more" ]
A321688
[ 1, 2, 7, 32, 171, 1110, 8148, 68500, 637688, 6592438, 74324893, 913096970, 12092478469, 172257496610, 2621329989642, 42504082679852, 730902589691526, 13296176824037236, 254998358579025200, 5144120812828241000, 108867706910988960000, 2.4123340620406435e+21, 5.5847969248056...
[ "nonn" ]
A210296
[ 312704, 194768054, 121040117840, 75244563204398, 46773822117508380, 29075895528477827000, 1.8074362569780909e+22, 1.1235513600375237e+25, 6.98429962953289e+27, 4.341629868067826e+30 ]
[ "nonn" ]
A078126
[ -1, -1, 0, 1, 3, 5, 8, 11, 15, 19, 24, 29, 35, 41, 48, 55, 63, 71, 80, 89, 99, 109, 120, 131, 143, 155, 168, 181, 195, 209, 224, 239, 255, 271, 288, 305, 323, 341, 360, 379, 399, 419, 440, 461, 483, 505, 528, 551, 575, ...
[ "sign", "easy", "nice" ]
A277112
[ 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, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55...
[ "nonn", "easy" ]
A266111
[ 5, 4, 5, 3, 2, 2, 4, 1, 1, 3, 3, 2, 4, 1, 2, 3, 2, 2, 3, 1, 1, 7, 2, 6, 1, 1, 3, 5, 1, 4, 5, 3, 2, 1, 4, 2, 1, 1, 3, 3, 1, 2, 3, 1, 2, 9, 2, 8, 2, 1, 1, 7, 1, 6, 4, 1, 1, 5, 3, 4, 8, 3, 2, 1...
[ "nonn" ]
A075645
[ 2, 9, 16, 55, 78, 112, 232, 342, 420, 605, 852, 1053, 1330, 1650, 2144, 2601, 3168, 3534, 4420, 5229, 5984, 6670, 7440, 8950, 10478, 11232, 12712, 13775, 15510, 17236, 19200, 20526, 22780, 26040, 27756, 29896, 32452, 35958, 39120, 41533, ...
[ "nonn" ]
A207409
[ 1, 1, 2, 1, 1, 2, 1, 2, 1, 4, 1, 1, 3, 6, 2, 1, 2, 2, 3, 6, 4, 1, 1, 4, 5, 8, 6, 2, 1, 2, 3, 2, 1, 10, 6, 4, 1, 2, 4, 1, 7, 3, 12, 10, 6, 1, 1, 1, 3, 9, 5, 14, 12, 8, 2, 1, 1, 2, 2, 4, 11, 3, ...
[ "nonn", "tabl" ]
A224397
[ 0, 3, 15, 73, 432, 2466, 12690, 67628, 395896, 2378907, 14778790, 93389066, 562139796, 3163874871, 17458695226, 100299771120, 608013094016, 3788103579016, 23633567094114, 145391247840963, 873481016484060, 5103300936908811, 29074526437910270, 163299878621689120 ]
[ "nonn" ]
A271997
[ 5, 13, 31, 49, 81, 113, 163, 213, 285, 357, 455, 553, 681, 809, 971, 1133, 1333, 1533, 1775, 2017, 2305, 2593, 2931, 3269, 3661, 4053, 4503, 4953, 5465, 5977, 6555, 7133, 7781, 8429, 9151, 9873, 10673, 11473, 12355, 13237, 14205, 1517...
[ "nonn", "easy" ]
A329347
[ 0, 1, 1, 4, 1, 7, 1, 11, 5, 9, 1, 23, 1, 11, 10, 26, 1, 28, 1, 31, 12, 15, 1, 59, 7, 17, 18, 39, 1, 54, 1, 57, 16, 21, 14, 87, 1, 23, 18, 81, 1, 68, 1, 55, 43, 27, 1, 135, 9, 52, 22, 63, 1, 94, 18, 103, 2...
[ "nonn" ]
A111929
[ 1, 5, 19, 79, 443, 463, 3481, 14029, 44327, 9067, 103769, 104693, 1405361, 1425953, 7321957, 29332873, 510190361, 515635801, 9993116059, 10039674571, 10217040331, 10301692171, 240663600893, 241109786633, 1222682465581 ]
[ "nonn", "frac" ]
A342917
[ 1, 1, 1, 6, 1, 12, 1, 4, 6, 18, 1, 24, 1, 8, 3, 24, 1, 36, 1, 12, 16, 36, 1, 48, 15, 14, 9, 48, 1, 72, 1, 16, 24, 54, 4, 72, 1, 20, 7, 72, 1, 96, 1, 8, 36, 72, 1, 96, 28, 30, 18, 84, 1, 108, 9, 32, 40, ...
[ "nonn", "look" ]
A356601
[ 1, 2, 1, 6, 3, 1, 12, 3, 4, 1, 20, 30, 20, 5, 1, 30, 30, 10, 15, 6, 1, 42, 35, 70, 105, 14, 7, 1, 56, 7, 280, 35, 56, 7, 8, 1, 72, 252, 56, 630, 504, 28, 72, 9, 1, 90, 180, 105, 630, 126, 420, 45, 45, 10, 1, ...
[ "nonn", "tabl", "frac" ]
A202656
[ 0, 0, 0, 0, 23, 1104, 16945, 141696, 810746, 3568352, 12948318, 40514560, 112720393, 285073712, 666143975, 1456288512, 3007576740, 5913372864, 11138305068, 20202100224, 35433809451, 60316600080, 99947225741, 161638967424, 255701773822, 396439174560, 603407582570 ]
[ "nonn" ]
A301584
[ 1, 2, 17, 264, 5784, 163610, 5667551, 232280480, 10991951114, 589780778314, 35379149504709, 2346218124687516, 170439977706143330, 13459938431949414000, 1.1481075125051511e+21, 1.051941227650967e+23, 1.030368604495909e+25, 1.0744085256777053e+27, 1.1882829787011569e+29, 1.389377...
[ "nonn" ]
A299288
[ 1, 11, 44, 116, 242, 438, 719, 1101, 1599, 2229, 3006, 3946, 5064, 6376, 7897, 9643, 11629, 13871, 16384, 19184, 22286, 25706, 29459, 33561, 38027, 42873, 48114, 53766, 59844, 66364, 73341, 80791, 88729, 97171, 106132, 115628, 125674, 136286,...
[ "nonn", "easy" ]
A120748
[ 0, 1, 3, 5, 15, 32, 79, 185, 439, 1041, 2464, 5841, 13835, 32781, 77663, 184000, 435935, 1032817, 2446959, 5797345, 13735104, 32541281, 77096979, 182658581, 432755695, 1025287136, 2429115823, 5755074345, 13634953255, 32304004977, 76534823264, 18132671710...
[ "nonn", "easy" ]
A160632
[ 1, 1, 1, 1, 1, 5, 1, 35, 35, 1, 175, 385, 1925, 25025, 35035, 875875, 5005, 14889875, 14889875, 11316305, 1414538125, 1980353375, 108919435625, 357878145625, 26369968625, 62628675484375, 162834556259375, 814172781296875 ]
[ "nonn", "frac" ]
A050944
[ 44, 104, 116, 164, 224, 272, 296, 344, 356, 464, 512, 560, 584, 620, 704, 776, 824, 836, 860, 884, 1004, 1112, 1184, 1196, 1280, 1304, 1424, 1484, 1520, 1544, 1592, 1616, 1700, 1724, 1880, 1904, 1952, 1964, 2024, 2036, 2120, 2144, 2...
[ "nonn" ]
A005211
[ 1, 2, 3, 6, 11, 14, 29, 44, 64, 65, 74, 92, 106, 127, 153, 165, 211, 240, 248, 288, 359, 369, 417, 441, 469, 518, 581, 612, 625, 666, 677, 707, 804, 830, 928, 944, 1001, 1060, 1269, 1300, 1361, 1445, 1496, 1548, 1655, 1727, ...
[ "nonn", "easy", "nice" ]
A110714
[ 2, 23, 91011, 34353637, 4344454647, 646566676869, 567891011, 1.0541055105610571e+31, 2.912922932942953e+26, 1.3013113213313414e+29, 8.118128138148158e+32, 2.1662167216821693e+47, 8.518528538548558e+38, 8.485868788899092e+27, 2.852862872882893e+44, 7.467477487497507e+47 ]
[ "base", "nonn" ]
A209220
[ 9, 81, 100, 196, 324, 576, 1024, 1764, 3136, 5476, 9604, 16900, 29584, 51984, 91204, 160000, 280900, 492804, 864900, 1517824, 2663424, 4674244, 8202496, 14394436, 25260676, 44328964, 77792400, 136515856, 239568484, 420414016, 737774244 ]
[ "nonn" ]
A199882
[ 1, 1, 1, 1, 3, 7, 15, 33, 93, 309, 1071, 3699, 13947, 58293, 260337, 1202121, 5797035, 29682639, 161252631, 915546969, 5401610901, 33227826669, 213648580503, 1430820925083, 9936454523427 ]
[ "nonn" ]
A127725
[ 2, 12, 40, 252, 880, 10880, 75852, 715816960, 62549517598720, 3074457344902430700 ]
[ "nonn", "more", "hard" ]
A141096
[ 4, 6, 8, 12, 14, 18, 20, 24, 30, 32, 38, 42, 48, 54, 60, 72, 80, 84, 90, 108, 110, 132, 138, 140, 150, 180 ]
[ "nonn", "fini", "full" ]
A318577
[ 0, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 4, 1, 1, 1, 11, 1, 3, 1, 4, 1, 1, 1, 19, 1, 1, 3, 4, 1, 4, 1, 45, 1, 1, 1, 17, 1, 1, 1, 19, 1, 4, 1, 4, 4, 1, 1, 96, 1, 3, 1, 4, 1, 11, 1, 19, 1, 1, 1, 26, 1, 1,...
[ "nonn" ]
A336902
[ 0, 1, 2, 5, 6, 11, 18, 25, 32, 53, 84, 107, 156, 205, 302, 497, 618, 863, 1206, 1597, 2228, 3569, 4440, 6191, 8256, 11329, 14642, 20477, 30390, 38555, 52578, 69625, 92696, 122141, 160500, 211955, 310476, 386941, 521102, 678617, 901386, ...
[ "nonn" ]
A065912
[ 55, 84, 86, 205, 222, 235, 206, 305, 325, 489, 556, 494, 830, 928, 964, 972, 1046, 976, 721, 940, 1162, 1132, 1065, 871, 1469, 1289, 1328, 1477, 1594, 1253, 1760, 1604, 1782, 1877, 1883, 1442, 2002, 2114, 2144, 1709, 2112, 1909, 227...
[ "nonn" ]
A070241
[ 2, 2, 3, 3, 4, 3, 4, 4, 4, 4, 2, 4, 5, 4, 5, 5, 5, 4, 4, 5, 6, 2, 2, 5, 5, 6, 4, 6, 2, 5, 2, 6, 5, 6, 10, 6, 6, 4, 10, 6, 7, 6, 4, 5, 10, 2, 2, 6, 4, 5, 7, 10, 2, 4, 9, 10, 8, 2, 2, 6, 7, 2, 8...
[ "dead" ]
A341727
[ 1, -4, 24, -200, 2080, -25932, 377216, -6271120, 117287424, -2437334420, 55714920448, -1389365372760, 37533886128128, -1091981490075868, 34038486791454720, -1131758947520249100, 39982188936149205000, -1.4955563503900476e+21, 5.90500257425956e+22 ]
[ "sign" ]
A058514
[ 1, 4, 10, 24, 47, 84, 150, 248, 403, 648, 1002, 1536, 2316, 3420, 5004, 7224, 10309, 14592, 20456, 28440, 39240, 53736, 73102, 98808, 132779, 177444, 235868, 312024, 410785, 538368, 702630, 913208, 1182342, 1525200, 1960418, 2511360, 3206675, ...
[ "nonn" ]
A294891
[ 0, 0, 0, 1, 0, 2, 0, 1, 1, 2, 0, 2, 0, 2, 2, 1, 0, 2, 0, 2, 2, 2, 0, 2, 1, 2, 1, 2, 0, 3, 0, 1, 2, 2, 2, 2, 0, 2, 2, 2, 0, 3, 0, 2, 2, 2, 0, 2, 1, 3, 2, 2, 0, 2, 2, 2, 2, 2, 0, 3, 0, 2, 2, 1...
[ "nonn" ]
A177650
[ 1, 70, 33607, 56904056, 249804639258, 2365851085271034, 42713565749790260000 ]
[ "nonn" ]
A030789
[ 1, 2, 3, 4, 5, 6, 8, 9, 11, 12, 15, 17, 19, 20, 22, 26, 29, 31, 33, 36, 38, 40, 44, 48, 51, 53, 57, 59, 63 ]
[ "dead" ]
A012200
[ 1, 1, 17, 393, 25601, 2044241, 289407505, 49702166681, 12331304386689, 3665631364571297, 1415269826057944600, 644290354204397400000, 3.583771061605865e+23, 2.311852440707544e+26 ]
[ "nonn" ]
A026318
[ 7, 13, 32, 38, 51, 57, 76, 82, 95, 101, 120, 126, 139, 145, 164, 170, 189, 208, 214, 233, 252, 258, 277, 296, 302, 321, 340, 346, 365, 371, 384, 390, 409, 415, 428, 434, 453, 459, 472, 478, 497, 503, 516, 522, 541, 547, 566,...
[ "nonn" ]