id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A285559
[ 1, 1, 6, 3, 28, 7, 120, 111, 432, 223, 1760, 959, 7872, 4991, 24448, 20223, 125696, 77311, 499200, 523263, 1207296, 1783807, 6420480, 4124671, 30846976, 14344191, 121495552, 57655295, 434290688, 518750207, 1316454400, 1807679487, 8251965440, 1280180223 ]
[ "nonn", "easy" ]
A012376
[ 2, 12, 70, -4200, -589622, -71780060, -9953562866, -1649406539984, -331640559601518, -81879655146380220, -25184651270216864000, -9.774076865809985e+21, -4.793386661964139e+24 ]
[ "sign" ]
A065650
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 10, 15, 17, 19, 21, 23, 25, 27, 29, 31, 12, 30, 37, 39, 41, 43, 45, 47, 49, 51, 13, 32, 50, 59, 61, 63, 65, 67, 69, 71, 14, 34, 52, 70, 81, 83, 85, 87, 89, 91, 16, 35, 54, 72, 90, 103, 105, 107, 109, 111, 18, 36, 56, 74, 92, 110, 125, 127 ]
[ "base", "nonn", "look" ]
A004602
[ 1, 0, 0, 1, 0, 2, 1, 1, 0, 1, 2, 2, 2, 2, 0, 1, 0, 2, 1, 1, 0, 0, 2, 1, 1, 1, 1, 1, 0, 2, 2, 1, 2, 2, 2, 2, 2, 0, 1, 1, 1, 2, 0, 1, 2, 1, 2, 1, 2, 1, 2, 0, 0, 1, 2, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 2, 2, 2, 0, 2, 2, 2, 1, 2, 0, 1, 2, 0, 1, 2, 1, 1, 1, 2, 1, 0, 1, 2, 1, 0, 1, 1, 2, 0, 0, 2, 2, 0, 1 ]
[ "nonn", "base", "cons", "easy" ]
A238582
[ 1, 4, 6, 1, 1, 4, 12, 3, 1, 8, 28, 10, 1, 8, 54, 82, 49, 8, 1, 1, 12, 95, 283, 311, 91, 10, 1, 12, 146, 647, 1118, 451, 68, 1, 16, 212, 1300, 3380, 3076, 1200, 209, 20, 1, 1, 16, 288, 2260, 8443, 13336, 9364, 2819, 387, 20 ]
[ "tabf", "nonn" ]
A059098
[ 1, 1, 1, 2, 3, 2, 5, 10, 12, 6, 15, 37, 62, 60, 24, 52, 151, 320, 450, 360, 120, 203, 674, 1712, 3120, 3720, 2520, 720, 877, 3263, 9604, 21336, 33600, 34440, 20160, 5040, 4140, 17007, 56674, 147756, 287784, 394800, 352800, 181440, 40320, 21147, 94828 ]
[ "easy", "nonn", "tabl" ]
A340615
[ 0, 2, 1, 5, 8, 3, 11, 4, 14, 17, 6, 20, 7, 23, 26, 9, 29, 10, 32, 35, 12, 38, 13, 41, 44, 15, 47, 16, 50, 53, 18, 56, 19, 59, 62, 21, 65, 22, 68, 71, 24, 74, 25, 77, 80, 27, 83, 28, 86, 89, 30, 92, 31, 95, 98, 33, 101, 34, 104, 107, 36, 110, 37, 113, 116, 39, 119, 40, 122 ]
[ "nonn", "easy" ]
A044860
[ 16, 20, 22, 23, 26, 31, 32, 37, 40, 41, 43, 47, 48, 53, 58, 60, 61, 62, 256, 320, 336, 340, 342, 343, 346, 351, 362, 383, 426, 511, 512, 597, 640, 661, 672, 677, 680, 681, 683, 687, 703, 767, 768, 853, 938, 960, 981, 1002, 1008, 1013 ]
[ "nonn", "base" ]
A195088
[ 32, 96, 144, 160, 216, 224, 243, 324, 352, 400, 416, 480, 486, 544, 608, 672, 720, 736, 784, 928, 992, 1000, 1008, 1056, 1080, 1120, 1184, 1200, 1215, 1248, 1312, 1376, 1504, 1512, 1584, 1620, 1632, 1696, 1701, 1760, 1800, 1824, 1872, 1888, 1936, 1952 ]
[ "nonn", "easy" ]
A117630
[ 2, 5, 8, 10, 13, 16, 18, 21, 24, 27, 29, 32, 35, 37, 40, 43, 46, 48, 51, 54, 56, 59, 62, 65, 67, 70, 73, 75, 78, 81, 83, 86, 89, 92, 94, 97, 100, 102, 105, 108, 111, 113, 116, 119, 121, 124, 127, 130, 132, 135, 138, 140, 143, 146, 149, 151, 154, 157, 159, 162, 165 ]
[ "nonn" ]
A029644
[ 1, 1, 1, 4, 1, 5, 1, 6, 14, 1, 7, 20, 1, 8, 27, 50, 1, 9, 35, 77, 1, 10, 44, 112, 182, 1, 11, 54, 156, 294, 1, 12, 65, 210, 450, 672, 1, 13, 77, 275, 660, 1122, 1, 14, 90, 352, 935, 1782, 2508, 1, 15, 104, 442, 1287, 2717, 4290, 1, 16, 119, 546, 1729, 4004, 7007, 9438, 1, 17 ]
[ "nonn" ]
A259991
[ 8, 148, 344, 36016, 151264, 1764736, 46941952, 1101076992, 15858967552, 139825248256, 2453862488064, 14602557997056, 127990382747648, 921705156001792, 56481739283791870, 523186025957228540, 15768859390622826000, 198716939766610000000, 3.186868919241067e+21 ]
[ "nonn", "base" ]
A003870
[ 1, 1, 5, 5, 5, 5, 9, 9, 10, 10, 16 ]
[ "nonn", "fini", "full" ]
A196862
[ 1, 13, 113, 787, 7428, 62298, 494579, 3938849, 31419870, 250968250, 2008718820, 16085753439, 128812555358, 1031543802305, 8260521035929, 66148710544824, 529714073173089, 4241953681722567, 33969698176325536, 272030805637262900 ]
[ "nonn" ]
A051748
[ 0, 1, 2, 7, 13, 34, 72, 137, 249, 524, 953, 1679, 3106, 5270, 9398, 15666, 26284, 43409, 72861, 115940, 189476, 297929, 476904, 743094, 1174624, 1782368, 2787256, 4196505, 6413986, 9645485, 14553197, 21483398, 32243250, 47165359, 69606943 ]
[ "nonn", "nice" ]
A138700
[ 5, 89, 119, 755, 1175, 1469, 1769, 2105, 5045, 6725, 9065, 9365, 9659, 10379, 10505, 11639, 12899, 14279, 16385, 19229, 19985, 21845, 22559, 23309, 24905, 26795, 27005, 29489, 30359, 31409, 31835, 32549, 35999, 36455, 38339 ]
[ "nonn" ]
A250570
[ 140608, 5281190, 194160522, 6967413024, 243722971680, 8480014708481, 293803461491618, 10151010566609616, 350378450458040000, 12086042361798408000, 416746941251487100000, 1.4367773038198024e+22 ]
[ "nonn" ]
A128052
[ 1, 3, 7, 9, 47, 123, 161, 843, 2207, 2889, 15127, 39603, 51841, 271443, 710647, 930249, 4870847, 12752043, 16692641, 87403803, 228826127, 299537289, 1568397607, 4106118243, 5374978561, 28143753123, 73681302247, 96450076809, 505019158607, 1322157322203 ]
[ "easy", "nonn" ]
A023755
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 75, 76, 77, 78, 79, 80, 81, 82, 83, 90 ]
[ "nonn", "base", "easy" ]
A132107
[ 1, 6, 9, -16, -66, -54, 98, 300, 243, -364, -1128, -828, 1221, 3498, 2511, -3528, -9876, -6804, 9358, 25428, 17217, -23068, -61644, -40824, 53916, 141318, 92340, -119912, -310554, -199980, 256792, 656436, 418311, -530960, -1344144, -847584, 1066157, 2673372 ]
[ "sign" ]
A139886
[ 19, 29, 59, 109, 179, 181, 211, 269, 331, 379, 421, 509, 659, 661, 811, 829, 941, 971, 1019, 1021, 1091, 1171, 1181, 1229, 1291, 1381, 1459, 1549, 1571, 1579, 1699, 1709, 1741, 1789, 1861, 1931, 1979, 2029, 2131, 2141, 2179, 2269, 2309, 2339 ]
[ "nonn", "easy" ]
A253009
[ 10, 85, 632, 3423, 14795, 54219, 2327062, 43197859, 395069496, 2063349297, 7250116841, 19242081848, 41884052188, 79190458776, 135212633776, 214009464108, 319640931500, 456167117868, 627648109484, 838143992620 ]
[ "nonn" ]
A048368
[ 17, 7, 179, 477, 707, 6935, 15477, 44197, 535677, 693368, 2028209, 7566137, 32215777, 62446477, 322024127, 2027400657, 5171307877, 15373346477, 28575396477, 237304541491, 322033146477, 5105022776547, 4536383124177 ]
[ "nonn", "base", "more" ]
A146340
[ 521, 617, 709, 1433, 1597, 2549, 2909, 2965, 3161, 3581, 3821, 4013, 4285, 4649, 5501, 5585, 5693, 5813, 6197, 6409, 7825, 7853, 8093, 8125, 8573, 8917, 9281, 9665, 9677, 9925, 10265, 10597, 10973, 11273, 12085, 12805, 13061, 13109, 13613, 13957, 14677 ]
[ "nonn" ]
A359276
[ 0, 0, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 16, 16 ]
[ "nonn" ]
A154511
[ 577, 31249, 40897, 64081, 77617, 126001, 186049, 208657, 581041, 982801, 1367857, 1616401, 2101249, 2567377, 3836449, 4038481, 4141441, 4566241, 4898449, 5359537, 7691041, 8413201, 8711137, 10941841, 12152449, 13240657, 14183137, 15356881, 15557041, 15758497, 16994449 ]
[ "nonn", "easy" ]
A118157
[ 1, 63, 98, 151, 213, 374, 535, 597, 857, 820, 90, 71, 79, 159, 1013, 3163, 3675, 5825, 5347, 7497, 8009, 9070, 771, 239, 994, 561, 227, 784, 549, 1007, 7063, 3669, 9725, 5341, 1497, 8003, 3070, 765, 629, 988, 951, 221, 184, 543, 407, 766, 729, 989, 1051 ]
[ "base", "nonn", "less" ]
A208337
[ 1, 1, 2, 1, 3, 3, 1, 4, 7, 5, 1, 5, 12, 15, 8, 1, 6, 18, 31, 30, 13, 1, 7, 25, 54, 73, 58, 21, 1, 8, 33, 85, 145, 162, 109, 34, 1, 9, 42, 125, 255, 361, 344, 201, 55, 1, 10, 52, 175, 413, 701, 850, 707, 365, 89, 1, 11, 63, 236, 630, 1239, 1806, 1918, 1416, 655 ]
[ "nonn", "tabl" ]
A189087
[ 1, 2, 13, 80, 721, 7232, 87613, 1193600, 18431041, 315130112, 5936395213, 121904337920, 2712867153361, 65005861947392, 1669061195146813, 45709411009495040, 1330071346341607700, 40979304201240710000, 1.332713597815934e+21, 4.562309788049567e+22 ]
[ "nonn" ]
A097839
[ 1, 83, 6888, 571621, 47437655, 3936753744, 326703123097, 27112422463307, 2250004361331384, 186723249568041570, 15495779709786118000, 1.28596299266268e+21, 1.0671943261129264e+23, 8.856426943744626e+24, 7.349767168981926e+26 ]
[ "nonn", "easy" ]
A241609
[ 20, 50, 125, 295, 711, 1730, 4175, 10077, 24377, 58928, 142396, 344201, 832011, 2010980, 4860690, 11748840, 28397936, 68640170, 165909570, 401018224, 969296175, 2342874854, 5662936565, 13687818660, 33084669767, 79968578621 ]
[ "nonn" ]
A062658
[ 3, 827, 9439, 27701, 36683 ]
[ "nonn", "hard" ]
A325322
[ 7, 8, 22, 33, 44, 55, 66, 77, 88, 99, 111, 121, 141, 161, 171, 202, 212, 222, 232, 242, 252, 262, 272, 282, 292, 303, 323, 333, 343, 363, 393, 404, 414, 424, 434, 444, 454, 464, 474, 484, 494, 505, 515, 525, 535, 545, 555, 565, 575, 585, 595, 606, 616, 626, 636, 646, 656, 666, 676, 686, 696, 707, 717, 737 ]
[ "nonn", "base" ]
A194519
[ 1, -1, 0, 1, -1, 0, 1, -1, 0, 1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3, 4, 2, 3, 4, 2, 3, 4, 2, 3, 4, 5, 3, 4, 5, 3, 4, 5, 3, 4, 5, 6, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 7, 8, 9, 7, 8, 9, 7, 8, 9, 10, 8, 9, 10, 8, 9, 10, 8, 9, 10 ]
[ "sign" ]
A215220
[ 1, 4, 456, 143164, 75965484, 55824699632, 51274161733160, 55418842406649980, 67819708829687670000, 9.153906992635482e+22, 1.3375294475858135e+26, 2.0867306432058075e+29, 3.4399716209159374e+32, 5.943443774047934e+35 ]
[ "nonn" ]
A269696
[ 1, 5, 20, 80, 320, 1280, 5120, 20480, 81920, 327680, 1310720, 5242880, 20971520, 83886080, 335544320, 1342177280 ]
[ "nonn", "easy" ]
A275655
[ 1, 40, 5544, 972400, 189290920, 39089615040, 8385425017200, 1847301025078080, 415026659401497000, 94660194875011200000, 2.185009103159754e+22, 5.092815839064962e+24, 1.1966229408648499e+27, 2.8307328484859147e+29 ]
[ "nonn", "easy" ]
A116673
[ 1, 2, 4, 10, 26, 80, 262, 950, 3684, 15302, 67470, 314912, 1549178, 8006194, 43324868, 244807122, 1440902090, 8815829144, 55963478926, 367981232894, 2502358256292, 17573264810910, 127280664307590, 949633391273512, 7290427591709562, 57532132352904790, 466247761803745200 ]
[ "nonn" ]
A386674
[ 5, 4, 6, 10, 11, 15, 16, 17, 21, 22, 20, 26, 27, 31, 32, 33, 37, 38, 36, 42, 43, 47, 48, 49, 53, 52, 54, 58, 59, 63, 64, 65, 69, 68, 70, 74, 75, 79, 80, 81, 85, 84, 86, 90, 91, 95, 96, 97, 101, 100, 102, 106, 107, 111, 112, 113, 117, 116, 118, 122, 123, 127 ]
[ "nonn" ]
A134563
[ 1, 2, 5, 3, 7, 18, 4, 8, 24, 59, 6, 10, 26, 78, 188, 9, 11, 27, 84, 248, 594, 13, 12, 33, 86, 267, 783, 1872, 19, 14, 35, 87, 273, 843 ]
[ "nonn", "tabl" ]
A295047
[ 8, 48, 270, 1569, 9045, 52199, 301306, 1739181, 10038808, 57945607, 334471955, 1930628323, 11143914889, 64324570123, 371292350727, 2143162565884, 12370698651477, 71405775600211, 412166275575168, 2379093810054735 ]
[ "nonn" ]
A302539
[ 1, 2, 3, 5, 6, 10, 11, 15, 17, 22, 30, 31, 33, 34, 41, 51, 55, 59, 62, 66, 67, 82, 83, 85, 93, 102, 109, 110, 118, 123, 127, 134, 155, 157, 165, 166, 170, 177, 179, 186, 187, 191, 201, 205, 211, 218, 241, 246, 249, 254, 255, 277, 283, 295, 310, 314, 327, 330 ]
[ "nonn" ]
A137932
[ 0, 0, 0, 4, 8, 16, 24, 36, 48, 64, 80, 100, 120, 144, 168, 196, 224, 256, 288, 324, 360, 400, 440, 484, 528, 576, 624, 676, 728, 784, 840, 900, 960, 1024, 1088, 1156, 1224, 1296, 1368, 1444, 1520, 1600, 1680, 1764, 1848, 1936, 2024, 2116, 2208, 2304, 2400, 2500, 2600, 2704, 2808 ]
[ "nonn", "easy" ]
A303732
[ 1, 0, 1, 1, 1, 7, 8, 45, 96, 258, 1260, 2511, 12594, 35799, 126043, 482640, 1487929, 6012740, 20051360, 74529198, 276148256, 977824914, 3744986184, 13527623583, 50997301218, 190934525258, 711190503929, 2707743977818, 10155615925523, 38691707792278 ]
[ "nonn" ]
A021650
[ 0, 0, 1, 5, 4, 7, 9, 8, 7, 6, 1, 6, 0, 9, 9, 0, 7, 1, 2, 0, 7, 4, 3, 0, 3, 4, 0, 5, 5, 7, 2, 7, 5, 5, 4, 1, 7, 9, 5, 6, 6, 5, 6, 3, 4, 6, 7, 4, 9, 2, 2, 6, 0, 0, 6, 1, 9, 1, 9, 5, 0, 4, 6, 4, 3, 9, 6, 2, 8, 4, 8, 2, 9, 7, 2, 1, 3, 6, 2, 2, 2, 9, 1, 0, 2, 1, 6, 7, 1, 8, 2, 6, 6, 2, 5, 3, 8, 6, 9 ]
[ "nonn", "cons" ]
A203246
[ 1, 5, 13, 31, 58, 106, 170, 270, 395, 575, 791, 1085, 1428, 1876, 2388, 3036, 3765, 4665, 5665, 6875, 8206, 9790, 11518, 13546, 15743, 18291, 21035, 24185, 27560, 31400, 35496, 40120, 45033, 50541, 56373, 62871, 69730, 77330, 85330, 94150, 103411, 113575 ]
[ "nonn", "easy" ]
A387564
[ 4, 27, 3375, 1793613375 ]
[ "nonn", "more" ]
A087257
[ 1, 2, 4, 8, 16, 20, 24, 32, 40, 48, 52, 56, 64, 68, 72, 80, 84, 88, 96, 100, 104, 112, 116 ]
[ "dead" ]
A163427
[ 5, 7, 13, 19, 29, 31, 41, 53, 71, 101, 103, 109, 173, 191, 199, 223, 229, 233, 239, 257, 269, 277, 331, 383, 397, 431, 491, 569, 571, 599, 619, 631, 719, 733, 751, 757, 761, 823, 857, 859, 863, 887, 907, 937, 967, 971, 977, 1009, 1019, 1063, 1069, 1123, 1163 ]
[ "nonn", "easy" ]
A085646
[ 1, 5, 24, 52, 120, 120, 336, 496, 654, 600, 1320, 1248, 2184, 1680, 2880 ]
[ "mult", "nonn", "more" ]
A020102
[ 1, 1, 1, 1, 3, 12, 59, 365, 2654, 21952, 203551, 2091016, 23571445, 289285912, 3839613004, 54801749237, 836972170165, 13619819859948, 235251433944554, 4298685292986838, 82847389283019060, 1679542528192113700, 35728450145177690000, 795770025960775700000, 1.8519738785996237e+22 ]
[ "nonn" ]
A116060
[ 55, 444, 4411445566, 1122777666688, 4466224466600, 44488668881177, 660000556677333, 9995566666633378000, 11155533666655666000, 441155662211122300000, 1.1441155887766884e+21, 4.4886677006688877e+21 ]
[ "nonn", "base" ]
A375764
[ 0, 0, 3, 18, 52, 117, 228, 403, 663, 1032, 1537, 2208, 3078, 4183, 5562, 7257, 9313, 11778, 14703, 18142, 22152, 26793, 32128, 38223, 45147, 52972, 61773, 71628, 82618, 94827, 108342, 123253, 139653, 157638, 177307, 198762, 222108, 247453, 274908, 304587 ]
[ "nonn", "easy" ]
A063554
[ 1, 12, 34, 32, 83, 53, 92, 139, 93, 172, 173, 244, 254, 335, 342, 332, 333, 415, 356, 434, 506, 473, 477, 476, 517, 532, 596, 643, 662, 673, 731, 729, 603, 735, 850, 793, 792, 966, 959, 961, 1043, 1129, 1131, 1159, 1153, 1077, 1157, 1241, 1078, 1328, 1240 ]
[ "base", "nonn", "changed" ]
A132213
[ 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 2, 0, 1, 3, 0, 0, 2, 2, 4, 1, 1, 3, 3, 0, 2, 4, 3, 0, 4, 1, 4, 1, 2, 4, 2, 1, 3, 6, 2, 0, 5, 2, 6, 2, 2, 7, 5, 0, 6, 5, 3, 3, 8, 6, 3, 0, 3, 6, 8, 0, 6, 8, 3, 2, 2, 3, 7, 3, 3, 2, 7, 0, 9, 10, 3, 4, 6, 4, 9, 1, 10, 10, 11, 1, 2, 13, 3, 0, 10, 4, 5, 4, 4, 13, 4, 1, 11, 10, 4, 4 ]
[ "nice", "nonn", "look" ]
A204829
[ 6, 12, 18, 20, 24, 28, 30, 36, 40, 42, 48, 54, 56, 60, 66, 70, 72, 78, 80, 84, 88, 90, 96, 100, 102, 104, 108, 112, 114, 126, 132, 138, 140, 144, 150, 156, 160, 162, 168, 174, 176, 186, 192, 196, 198, 200, 204, 208, 210, 216, 220, 222, 224, 228, 234, 246, 252 ]
[ "nonn", "changed" ]
A302512
[ 8, 7, 21, 36, 90, 184, 376, 832, 1744, 3684, 7908, 16724, 35532, 75700, 160628, 341460, 726132, 1542596, 3278948, 6969732, 14811684, 31481860, 66911620, 142208964, 302253508, 642403076, 1365342212, 2901889028, 6167616388, 13108516100 ]
[ "nonn" ]
A026131
[ 1, 3, 16, 84, 458, 2541, 14286, 81103, 463913, 2669576, 15437366, 89633392, 522223740, 3051529665, 17876415654, 104955553899, 617415739622, 3638327064022, 21473223755896, 126910074421985, 751000070996514, 4449166010804565, 26385683227918790, 156628589801790620 ]
[ "nonn" ]
A327694
[ 1, 0, -1, -1, -1, 1, -1, 0, 0, 1, 4, 2, -1, -2, 1, 2, 0, -5, -2, 0, 5, -1, -6, -7, -3, 6, -1, -2, -6, 7, 18, 7, -8, -6, 1, 12, 4, -10, -7, 6, 27, 10, -21, -25, -1, 19, -4, -29, -26, 11, 39, 6, -27, -42, -3, 40, 12, -45, -32, 28, 90, 24, -55, -57, 9, 75, 14, -57, -59, 57, 139 ]
[ "sign" ]
A168604
[ 1, 3, 7, 15, 31, 63, 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767, 65535, 131071, 262143, 524287, 1048575, 2097151, 4194303, 8388607, 16777215, 33554431, 67108863, 134217727, 268435455, 536870911, 1073741823, 2147483647, 4294967295, 8589934591 ]
[ "nonn", "easy" ]
A360914
[ 0, 1, 1, 7, 90, 1398, 23, 2100, 6840, 2912, 416, 1344, 102198, 1643968, 42592, 48128, 1120128 ]
[ "nonn", "more" ]
A216241
[ 1, 2, 4, 8, 16, 32, 62, 124, 236, 472, 890, 1780, 3340, 6680, 12502, 25004, 46732, 93464, 174554, 349108, 651740, 1303480, 2432918, 4865836, 9080956, 18161912, 33892954, 67785908, 126494956, 252989912, 472095062, 944190124, 1761901676, 3523803352, 6575544410, 13151088820 ]
[ "nonn", "walk", "easy" ]
A350826
[ 1, 1, 0, 0, 3, 0, 13, 64, 235, 1296, 7013, 41782, 253420, 1607418, 10520883, 70785653, 488096844 ]
[ "nonn", "base", "more", "hard" ]
A341017
[ 2, 5, 17, 23, 29, 31, 41, 43, 47, 53, 61, 67, 71, 73, 83, 101, 107, 113, 131, 149, 197, 239, 241, 257, 263, 269, 293, 317, 347, 359, 389, 401, 421, 431, 443, 503, 521, 557, 593, 599, 607, 641, 647, 677, 683, 701, 757, 797, 827, 887, 911, 953, 1031, 1103, 1109, 1117, 1171, 1181, 1187, 1223, 1277 ]
[ "nonn", "base" ]
A342924
[ 6, 28, 120, 496, 672, 963, 1036, 5871, 8128, 10479, 164284, 264768, 523776, 2308203, 6511664, 33550336, 41240261, 75384301, 400902412, 459818240, 581013140, 1253768516, 1476304896, 2114464203, 8589869056 ]
[ "nonn", "more" ]
A302751
[ 1, 1, 0, 2, 0, 0, 12, 0, 0, 18, 144, 0, 0, 432, 576, 2880, 0, 4320, 9408, 23040, 21600, 109440, 172800, 110880, 662400, 832320, 2678400, 4060800, 10296000, 9412992, 32922000, 63676800, 135734400, 263556528, 281030400, 973036800, 1906704000, 4069224000, 5184984960 ]
[ "nonn" ]
A155598
[ 1, 6, 46, 336, 2386, 16776, 117586, 823416, 5764546, 40353096, 282474226, 1977324696, 13841283106, 96889002216, 678223056466, 4747561477176, 33232930504066, 232630513856136, 1628413597648306, 11398895184848856 ]
[ "nonn", "easy" ]
A357723
[ 0, 0, 0, 5, 21, 63, 135, 270, 462, 770, 1170, 1755, 2475, 3465, 4641, 6188, 7980, 10260, 12852, 16065, 19665, 24035, 28875, 34650, 40986, 48438, 56550, 65975, 76167, 87885, 100485, 114840, 130200, 147560, 166056, 186813, 208845, 233415, 259407, 288230, 318630 ]
[ "nonn", "easy" ]
A070282
[ 1, 2, 2, 4, 16, 2401, 823543, 6103515625, 1.9363012510498043e+38, 1.2167916140685274e+74 ]
[ "base", "nonn" ]
A115266
[ 1, 2, 4, 8, 13, 20, 31, 44, 61, 84, 111, 144, 186, 234, 291, 360, 438, 528, 634, 752, 886, 1040, 1210, 1400, 1615, 1850, 2110, 2400, 2715, 3060, 3441, 3852, 4299, 4788, 5313, 5880, 6496, 7154, 7861, 8624, 9436, 10304, 11236, 12224, 13276, 14400, 15588 ]
[ "easy", "nonn" ]
A337000
[ 1, 2, 7, 34, 211, 1596, 14259, 147106, 1722683, 22591408, 328161643, 5232410646, 90880495347, 1708304787892, 34557610000931, 748647340991818, 17294012137850444, 424368973372593400, 11024176183963527000, 302260934814635460000, 8.722906492537093e+21 ]
[ "nonn" ]
A295425
[ 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 210, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 330, 331 ]
[ "nonn", "easy" ]
A090965
[ 1, 4, 28, 208, 1552, 11584, 86464, 645376, 4817152, 35955712, 268377088, 2003193856, 14952042496, 111603564544, 833020346368, 6217748512768, 46409906716672, 346408259682304, 2585626450591744, 19299378566004736 ]
[ "easy", "nonn" ]
A249303
[ 1, 0, 1, -1, 2, -1, 1, 1, 0, -2, 3, 1, -4, 3, 1, 1, -2, -2, 4, 0, 3, -9, 6, 1, -1, 6, -9, 0, 5, -1, 3, 3, -15, 10, 1, 0, -4, 18, -24, 5, 6, 1, -8, 18, -6, -20, 15, 1, 1, -4, -4, 36, -49, 14, 7, 0, 5, -30, 60, -35, -21, 21, 1, -1, 10, -30, 20, 50, -84, 28, 8 ]
[ "tabf", "sign", "easy" ]
A261893
[ 1, 7, 23, 55, 109, 191, 307, 463, 665, 919, 1231, 1607, 2053, 2575, 3179, 3871, 4657, 5543, 6535, 7639, 8861, 10207, 11683, 13295, 15049, 16951, 19007, 21223, 23605, 26159, 28891, 31807, 34913, 38215, 41719, 45431, 49357, 53503, 57875, 62479, 67321, 72407 ]
[ "nonn", "easy" ]
A349254
[ 1, 4, 37, 478, 7159, 116497, 2000386, 35671756, 654218641, 12261271942, 233798163646, 4521194100541, 88458184054882, 1747850650032532, 34828329987024056, 699083528482636300, 14121906499195595000, 286877562430915740000, 5.856866441794111e+21 ]
[ "nonn" ]
A336361
[ 0, 0, 1, 0, 2, 1, 1, 0, 3, 2, 2, 1, 2, 1, 2, 0, 4, 3, 3, 2, 1, 2, 2, 1, 2, 2, 3, 1, 3, 2, 1, 0, 2, 4, 2, 3, 4, 3, 2, 2, 2, 1, 3, 2, 3, 2, 2, 1, 4, 2, 4, 2, 4, 3, 4, 1, 3, 3, 3, 2, 2, 1, 3, 0, 2, 2, 5, 4, 2, 2, 4, 3, 5, 4, 2, 3, 2, 2, 3, 2, 5, 2, 2, 1, 4, 3, 3, 2, 4, 3, 2, 2, 1, 2, 3, 1, 5, 4, 3, 2, 5, 4, 3, 2, 2 ]
[ "nonn" ]
A086888
[ 9, 57, 57, 95, 9, 99, 147, 177, 63, 225, 231, 243, 177, 279, 411, 441, 291, 57, 441, 411, 381, 651, 609, 441, 669, 355, 267, 531, 801, 693, 789, 417, 711, 897, 477, 155 ]
[ "more", "nonn" ]
A119176
[ 6, 66, 666, 2926, 29962999696266, 226966926929226, 9996922966699223000, 296292269222296600000, 2.2266696966226667e+25, 2.6666926962669695e+32 ]
[ "nonn", "base", "more" ]
A375364
[ 1, -1, 2, 1, 3, 4, 12, 17, 35, 67, 127, 234, 451, 850, 1602, 3031, 5740, 10837, 20490, 38751, 73253, 138471, 261814, 494972, 935738, 1769079, 3344568, 6323022, 11953992, 22599700, 42725842, 80775309, 152709941, 288705926, 545813095, 1031887517, 1950836006 ]
[ "sign" ]
A268676
[ 1, 3, 3, 1, 3, 1, 1, 3, 3, 1, 1, 3, 1, 3, 3, 1, 3, 1, 1, 3, 1, 3, 3, 1, 1, 3, 3, 1, 3, 1, 1, 3, 3, 1, 1, 3, 1, 3, 3, 1, 1, 3, 3, 1, 3, 1, 1, 3, 1, 3, 3, 1, 3, 1, 1, 3, 3, 1, 1, 3, 1, 3, 3, 1, 3, 1, 1, 3, 1, 3, 3, 1, 1, 3, 3, 1, 3, 1, 1, 3, 1, 3, 3, 1, 3, 1, 1, 3, 3, 1, 1, 3, 1, 3, 3, 1, 1, 3, 3, 1, 3, 1, 1, 3, 3, 1, 1, 3, 1, 3, 3, 1, 3, 1, 1, 3, 1, 3, 3, 1, 1 ]
[ "nonn" ]
A241157
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110 ]
[ "nonn", "base" ]
A359928
[ 1, 6, 93, 2448, 92505, 4589568, 283008621, 20903023872, 1800986581521, 177455695795200, 19690717755237308, 2430478269127674000, 330392930155527300000, 4.905302984510248e+22, 7.89860277399259e+24, 1.3711375492130226e+27, 2.5527551663659288e+29 ]
[ "nonn" ]
A350457
[ 1, 1, 1, 2, 2, 2, 4, 4, 7, 10, 16, 27, 45, 79, 139, 249, 439, 784, 1419, 2574, 4703, 8682, 16021, 29720, 55146, 102170, 190274, 356804, 671224, 1269022, 2404289, 4521836, 8535117, 16134474, 30635869, 58062404, 110496946, 210500898, 401422210, 767158570, 1467402238 ]
[ "nonn" ]
A014980
[ 5, 6, 9, 20, 100, 2500, 1562500, 610351562500, 9.313225746154786e+22, 2.168404344971009e+45, 1.1754943508222876e+90 ]
[ "nonn", "nice", "easy" ]
A048325
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 420, 421, 422, 423, 424, 425, 426, 427, 428, 429, 430, 431, 432, 433, 630, 631, 632, 633 ]
[ "nonn", "base" ]
A234539
[ 852, 172212, 272001, 341055, 777240, 1451892, 1710402, 2361910, 2922526, 3950382, 4794522, 5414050, 6272015, 7989142, 10580176, 10780301, 11325882, 12173777, 12483395, 14432055, 14665630, 15890910, 16581775, 16962972, 17124772 ]
[ "nonn", "less" ]
A351904
[ 1, 3, 2, 7, 9, 11, 4, 15, 10, 19, 6, 14, 24, 27, 8, 31 ]
[ "nonn", "more" ]
A201093
[ 1, 0, 1, 0, 1, 1, 0, 0, 2, 1, 0, 1, 1, 3, 1, 0, 0, 2, 3, 4, 1, 0, 2, 2, 4, 6, 5, 1, 0, 0, 4, 6, 8, 10, 6, 1, 0, 5, 5, 9, 13, 15, 15, 7, 1, 0, 0, 10, 15, 20, 25, 26, 21, 8, 1, 0, 14, 14, 24, 34, 41, 45, 42, 28, 9, 1 ]
[ "nonn", "tabl" ]
A035029
[ 1, 5, 26, 138, 743, 4043, 22180, 122468, 679757, 3789297, 21199998, 118973550, 669447123, 3775577367, 21336790152, 120795829128, 684962855705, 3889578815453, 22115533878178, 125892252068498, 717400693313471, 4092099111728355, 23362391663233196, 133488737662062190, 763310051648602200 ]
[ "nonn" ]
A289277
[ 0, 2, 3, 3, 7, 0, 9, 5, 16, 6, 1, 13, 4, 26, 24, 26, 22, 30, 23, 32, 7, 9, 43, 11, 37, 29, 23, 0, 49, 40, 1, 44, 20, 54, 19, 18, 8, 20, 22, 55, 4, 70, 80, 62, 2, 31, 37, 20, 7, 44, 51, 62, 64, 76, 77, 41, 75, 75, 115, 68, 0, 35, 42, 11, 88, 59, 101, 35, 119, 11 ]
[ "nonn" ]
A358590
[ 1, 0, 1, 0, 6, 5, 36, 84, 309, 890, 3163, 9835, 32979, 108252, 360696, 1192410, 3984552, 13276769, 44371368, 148402665, 497072593, 1665557619, 5586863093, 18750662066, 62968243731, 211565969511, 711187790166, 2391640404772, 8045964959333, 27077856222546 ]
[ "nonn" ]
A368202
[ 1, 1, 1, 3, 1, 1, 1, 2, 2, 1, 1, 1, 1, 4, 2, 1, 1, 1, 2, 2, 1, 3, 1, 3, 1, 1, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 1, 1, 4, 1, 3, 3, 4, 5, 1, 1, 1, 2, 3, 2, 1, 1, 10, 4, 1, 1, 6, 1, 2, 5, 1, 1, 1, 2, 3, 1, 4, 1, 2, 1, 2, 1, 1, 4, 4, 1, 1, 2, 3, 7, 1, 6, 1, 2, 2, 2 ]
[ "nonn" ]
A173150
[ 0, 0, 288, 235224, 354079488, 865363202000, 3134808545188320, 15796198853361764000, 1.057173805110141e+23, 9.073803143522433e+26, 9.718304978537582e+30 ]
[ "nonn" ]
A231398
[ 4, 8, 38, 90, 363, 1163, 3985, 14650, 50088, 185178, 665415, 2425915, 8953631, 32773916, 121530364, 449147910, 1665804417, 6189859849, 22993326811, 85585457988, 318520365520, 1186296435208, 4419902305187, 16469639460901 ]
[ "nonn" ]
A314028
[ 1, 5, 11, 15, 20, 25, 30, 35, 40, 45, 49, 55, 60, 65, 71, 75, 80, 85, 90, 95, 100, 105, 109, 115, 120, 125, 131, 135, 140, 145, 150, 155, 160, 165, 169, 175, 180, 185, 191, 195, 200, 205, 210, 215, 220, 225, 229, 235, 240, 245 ]
[ "nonn" ]
A359938
[ 1, 2, 1, 2, 2, 2, 1, 2, 1, 4, 1, 2, 1, 2, 2, 2, 2, 2, 1, 4, 1, 2, 1, 2, 2, 3, 1, 2, 1, 4, 1, 2, 1, 3, 2, 2, 2, 2, 1, 4, 1, 2, 1, 2, 2, 2, 1, 2, 1, 5, 2, 3, 1, 2, 2, 2, 1, 2, 1, 4, 1, 2, 1, 2, 3, 2, 1, 3, 1, 4, 1, 2, 1, 3, 2, 2, 1, 3, 1, 4, 1, 3, 1, 2, 3, 2, 1, 2, 1, 4 ]
[ "nonn" ]
A090181
[ 1, 0, 1, 0, 1, 1, 0, 1, 3, 1, 0, 1, 6, 6, 1, 0, 1, 10, 20, 10, 1, 0, 1, 15, 50, 50, 15, 1, 0, 1, 21, 105, 175, 105, 21, 1, 0, 1, 28, 196, 490, 490, 196, 28, 1, 0, 1, 36, 336, 1176, 1764, 1176, 336, 36, 1, 0, 1, 45, 540, 2520, 5292, 5292, 2520, 540, 45, 1, 0, 1, 55, 825, 4950, 13860 ]
[ "easy", "nonn", "tabl" ]
A378333
[ 1, 4, 0, 6, 2, 4, 9, 7, 6, 1, 1, 9, 6, 9, 6, 7, 8, 2, 4, 7, 9, 6, 6, 9, 0, 0, 8, 9, 3, 5, 6, 6, 3, 1, 8, 3, 2, 6, 5, 4, 5, 7, 0, 8, 3, 2, 4, 6, 8, 2, 8, 4, 8, 6, 6, 5, 7, 5, 5, 5, 1, 7, 1, 2, 7, 5, 4, 1, 4, 9, 1, 4, 8, 7, 8, 1, 8, 5, 4, 9, 5, 2, 4, 3, 6, 4, 4 ]
[ "nonn", "cons" ]
A103748
[ 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 3, 3, 2, 1, 1, 2, 2, 3, 2, 3, 3, 3, 3, 2, 1, 2, 3, 3, 3, 3, 2, 1, 3, 3, 3, 2, 1, 3, 3, 2, 1, 3, 3, 2, 1, 3, 3, 2, 1, 3, 2, 1, 2, 2, 3, 2, 3, 3, 3, 3, 2, 1, 2, 3, 3, 3, 3, 2, 1, 3, 3, 3, 2, 1, 3, 3, 2, 1, 3, 3, 2, 1, 3, 3, 2, 1, 3, 2, 2, 3, 3, 3, 3, 2, 1, 3, 3, 3, 2, 1, 3 ]
[ "nonn", "tabf" ]