id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A086682
[ 0, 4, 22, 129, 847, 5968, 43934, 334349, 2607165, 20700806, 166677978, 1357200840, 11152818693, 92349038518, 769616513836, 6449247674296, 54301968156067, 459127968423610, 3896275288090795, 33173029388942510, 283263365236063680, 2425147728864084500 ]
[ "nonn" ]
A051221
[ 0, 1, 6, 9, 10, 19, 36, 39, 51, 64, 75, 84, 91, 96, 99, 100, 144, 159, 199, 216, 271, 324, 375, 396, 424, 471, 516, 559, 591, 600, 639, 676, 711, 744, 775, 784, 804, 831, 856, 879, 900, 919, 936, 951, 964, 975, 984, 991, ...
[ "nonn" ]
A181527
[ 1, 4, 13, 38, 103, 264, 649, 1546, 3595, 8204, 18445, 40974, 90127, 196624, 426001, 917522, 1966099, 4194324, 8912917, 18874390, 39845911, 83886104, 176160793, 369098778, 771751963, 1610612764, 3355443229, 6979321886, 14495514655, 30064771104, 62277025825 ...
[ "nonn", "easy" ]
A006719
[ 3, 4, 6, 12, 48, 924, 409620, 83763206256, 3.508125906290859e+21, 6.153473687096579e+42, 1.8932619208894982e+85 ]
[ "nonn" ]
A326211
[ 0, 0, 0, 1, 17, 170, 1455, 11678, 92871, 752473 ]
[ "nonn", "more" ]
A086590
[ 1, 1, 1, 1, 2, 3, 8, 12, 45, 78, 252, 500, 2458 ]
[ "nonn", "more" ]
A201583
[ 8, 2, 5, 0, 2, 8, 9, 2, 4, 0, 1, 5, 0, 0, 6, 3, 3, 9, 3, 3, 3, 9, 4, 6, 3, 1, 8, 1, 8, 3, 3, 5, 7, 9, 7, 8, 6, 9, 2, 2, 8, 7, 1, 0, 1, 4, 8, 2, 8, 7, 1, 0, 8, 8, 5, 2, 7, 4, 2, 5, 2, 0, 4, 2...
[ "nonn", "cons" ]
A322872
[ 1, 1, 1, 2, 1, 2, 1, 3, 2, 1, 1, 2, 1, 2, 3, 3, 1, 4, 1, 2, 2, 1, 1, 3, 2, 1, 3, 2, 1, 3, 1, 4, 2, 1, 3, 4, 1, 2, 3, 2, 1, 4, 1, 2, 5, 1, 1, 3, 2, 3, 1, 2, 1, 6, 1, 3, 1, 1, 1, 4, 1, 2, 2, 4...
[ "nonn" ]
A170461
[ 1, 20, 380, 7220, 137180, 2606420, 49521980, 940917620, 17877434780, 339671260820, 6453753955580, 122621325156020, 2329805177964380, 44266298381323220, 841059669245141100, 15980133715657683000 ]
[ "nonn" ]
A053443
[ 4, 8, 9, 12, 16, 18, 20, 24, 27, 28, 32, 36, 40, 44, 45, 48, 49, 52, 54, 56, 60, 63, 64, 68, 72, 76, 80, 81, 84, 88, 90, 92, 96, 98, 99, 100, 104, 108, 112, 116, 117, 120, 121, 124, 126, 128, 132, 135, 136, 140, 144,...
[ "nonn" ]
A207173
[ 10, 100, 270, 1161, 3445, 8455, 26908, 82861, 228060, 672760, 2029041, 5846337, 17039101, 50518174, 147655795, 430953736, 1267685262, 3717105229, 10874111625, 31898934243, 93554384968, 274033182253, 803273682808, 2355253402240 ]
[ "nonn" ]
A242461
[ 3, 7, 3, 3, 6, 4, 6, 1, 7, 7, 0, 1, 6, 7, 4, 0, 8, 4, 2, 4, 8, 4, 4, 8, 4, 3, 6, 6, 7, 9, 2, 7, 0, 5, 9, 5, 0, 0, 2, 5, 7, 6, 4, 6, 7, 0, 0, 4, 2, 7, 7, 3, 8, 4, 4, 4, 4, 9, 3, 8, 5, 7, 0, 3...
[ "nonn", "cons" ]
A164756
[ 25, 258, 739, 1538, 2570, 3742, 4930, 6222, 7670, 9240, 10946, 12778, 14742, 16836 ]
[ "nonn" ]
A280916
[ 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 9, 8, 7, 6, 5, 4, 5, 6, 7, 8, 8, 7, 6, 5, 4, 3, 4, 5, 6, 7, 7, 6, 5, 4, 3, 2, 3, 4, 5, 6, 6, 5, 4, 3, 2, 1, 2, 3, 4, 5, 5, 4, 3, 2, 1, 0, 1, 2, 3, 4, 6, 5, 4, 3...
[ "nonn", "base" ]
A132093
[ 1, 10, 350, 1050, 57750, 250250, 2388750, 2231250, 1088106250, 137156250, 105761906250, 2289218750, 8842968750, 51289218750, 45049030468750, 3563716406250, 1099667378906250, 4714260332031250, 14142780996093750 ]
[ "frac", "nonn" ]
A347527
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 20, 21, 23, 24, 26, 27, 29, 30, 32, 33, 35, 36, 38, 39, 41, 42, 44, 45, 47, 48, 50, 51, 53, 54, 56, 57, 59, 60, 62, 63, 65, 66, 68, 69, 71, 72, 74, 7...
[ "nonn" ]
A364522
[ 1, 1, 1, 1, 1, 2, 7, 22, 57, 127, 258, 518, 1123, 2718, 7008, 18054, 44969, 108189, 255919, 609179, 1482210, 3689155, 9294440, 23419705, 58639835, 145948111, 362721386, 904673836, 2270287636, 5729191861, 14502873988, 36735974548, 93001413353, 2353725...
[ "nonn" ]
A304392
[ 6, 23, 49, 66, 229, 236, 334, 389, 469, 666, 2233, 2269, 2349, 2366, 2899, 3338, 3346, 3689, 4499, 4669, 6666, 22239, 22336, 22499, 22669, 23334, 23389, 23469, 23666, 26899, 33368, 33449, 33466, 34899, 36689, 44699, 46669, 66666, 88999, 2...
[ "nonn", "base" ]
A390541
[ 1, 3, 18, 102, 613, 3755, 23377, 147167, 934408, 5972492, 38379673, 247718087, 1604764909, 10428457971, 67950502389, 443788258155, 2904320734836, 19041267622584, 125038439723991, 822271053113409, 5414375650645986, 35693621227289696, 235556873323331360 ]
[ "nonn", "new" ]
A166417
[ 1, 23, 506, 11132, 244904, 5387888, 118533536, 2607737792, 57370231424, 1262145091328, 27767192009216, 610878224202499, 13439320932449412, 295665060513764860, 6504631331300139000, 143101889288543910000 ]
[ "nonn" ]
A270636
[ 1, 5, 14, 46, 79, 171, 236, 412, 465, 781, 894, 1326, 1515, 2063, 2347, 3148, 3448, 4476, 4896, 6168, 6644, 8132, 8804, 10644, 11320, 13500, 14340, 16828, 17804, 20632, 21844, 25164, 26424, 30140, 31564, 35836, 37284, 41940, 43720, 48976,...
[ "nonn", "easy" ]
A207476
[ 788, 620944, 236422326, 103954441786, 45141978255552, 19555176286561332, 8467264566580419000, 3.6671581470331036e+21, 1.5883275656008758e+24, 6.879385560536344e+26, 2.9795893773009815e+29 ]
[ "nonn" ]
A241093
[ 0, 0, 0, 0, 1, 1, 1, 2, 3, 4, 5, 7, 8, 11, 13, 17, 21, 26, 31, 38, 45, 54, 65, 77, 92, 108, 128, 149, 175, 203, 237, 274, 318, 366, 424, 486, 559, 640, 733, 836, 953, 1084, 1232, 1398, 1583, 1792, 2025, 2286, 2576, 290...
[ "nonn", "easy" ]
A057043
[ 1, 1, 2, 1, 1, 1, 3, 1, 2, 10, 3, 9, 22, 25, 23, 38, 62, 1, 107, 33, 76, 166, 263, 176, 397, 430, 227, 688, 811, 1481, 942, 518, 2087, 2731, 3318, 2563, 6747, 6100, 12993, 8171, 6599, 15585 ]
[ "nonn" ]
A144841
[ 1, 1, 2, 11, 41, 121, 316, 757, 1961, 6281, 22166, 74031, 221937, 596961, 1460096, 3294761, 6945521, 13818417, 26161386, 47446611, 82880281, 140069161, 229877572, 367512861, 573882201, 877268601, 1315379326, 1937825527, 2809097761, 4012108241, 5652377096, ...
[ "easy", "nonn", "changed" ]
A301261
[ 1, 4, 12, 21, 34, 49, 71, 102, 139, 183, 215, 251, 298, 364, 431, 490, 540, 604, 681, 781, 882, 952, 1017, 1113, 1225, 1349, 1472, 1563, 1667, 1787, 1920, 2066, 2195, 2342, 2475, 2595, 2769, 2945, 3100, 3259, 3416, 3578, 3764, 397...
[ "nonn" ]
A354187
[ 2, 0, 0, 4, 0, 8, 0, 8, 4, 8, 0, 16, 0, 8, 8, 16, 0, 16, 0, 32, 8, 8, 0, 24, 4, 8, 8, 48, 0, 40, 0, 32, 8, 8, 8, 44, 0, 8, 8, 40, 0, 72, 0, 80, 16, 8, 0, 48, 4, 32, 8, 96, 0, 48, 8, 56, 8, 8, 0, 56,...
[ "sign" ]
A036070
[ 1, 10, 80, 560, 3584, 21504, 122880, 675840, 3604480, 18743296, 95420416, 477102080, 2348810240, 11408506880, 54760833024, 260113956864, 1224065679360, 5712306503680, 26456998543360, 121702193299456, 556352883654656, 2528876743884800, 11434920928870400, 5145714417991680...
[ "easy", "nonn" ]
A171427
[ 221, 553, 555, 556, 559, 560, 562, 565, 569, 571, 572, 574, 575, 576, 579, 580, 582, 595, 596, 598, 933, 935, 936, 966, 1349, 1350, 1353, 1362, 1374, 1375, 1376, 1377, 1379, 1380, 1382, 1446, 1478, 1945, 1967, 1968, 1970, 1971, 1972...
[ "nonn" ]
A013215
[ 0, 0, -1, 3, -6, 23, -135, 1036, -8820, 79253, -783405, 8594146, -103172454, 1341998591, -18791767995, 281865510928, -4509653027880, 76663767284201, -1379952916274457, 26219142105604030, -524382882377053700 ]
[ "sign" ]
A360779
[ 1, 6, 1, 3, 6, 6, 12, 4, 16, 4, 12, 8, 4, 4, 8, 8, 4, 20, 4, 4, 16, 4, 24, 4, 20, 21, 3, 4, 8, 8, 4, 24, 12, 8, 32, 16, 4, 12, 12, 4, 8, 12, 28, 17, 3, 4, 2, 18, 4, 8, 8, 4, 12, 12, 20, 24, 4, 4, 16, ...
[ "nonn" ]
A222822
[ 50, 122, 218, 344, 488, 668, 860, 1088, 1334, 1610, 1898, 2234, 2570, 2942, 3338, 3764, 4196, 4676, 5156, 5684, 6224, 6788, 7364, 8000, 8630, 9290, 9974, 10694, 11414, 12194, 12962, 13778, 14606, 15458, 16334, 17264, 18176, 19124, 20096, ...
[ "nonn" ]
A074316
[ 144, 2584, 46368, 832040, 14930352, 102334155, 267914296, 4807526976, 86267571272, 1548008755920, 498454011879264, 23416728348467684, 160500643816367100, 2880067194370816000, 51680708854858330000 ]
[ "nonn" ]
A351618
[ 4, 1111, 3168, 7119, 31488, 141184, 698112, 1169316, 1621248, 1687392, 1938816, 1967112, 12469248, 12822912, 14112672, 16616448, 41484288, 79817472, 116149248, 121911264, 128894976, 163319328, 166491936, 193916916, 218431488, 247984128, 798142464, 817883136 ]
[ "nonn", "base" ]
A223752
[ 6, 24, 117, 456, 1962, 7660, 31897, 125240, 514300, 2027832, 8266707, 32688296, 132665572, 525661108, 2127110678, 8440975288, 34086061208, 135418512296, 546011521445, 2171164829984, 8744100796746, 34795052216800, 140006637363629 ]
[ "nonn" ]
A223466
[ 20440, 8242836, 3988872656, 2005957755820, 1033873786631384, 535914084677165900, 280173531066504450000, 1.4651328091853825e+23, 7.697470862164484e+25, 4.039375273633107e+28 ]
[ "nonn" ]
A292642
[ 1, 3, 4, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 23, 24, 26, 28, 29, 31, 32, 34, 35, 37, 38, 40, 42, 43, 45, 46, 48, 49, 51, 53, 54, 56, 57, 59, 60, 62, 63, 65, 67, 68, 70, 71, 73, 74, 76, 77, 79, 81, 82, 84, ...
[ "nonn", "easy" ]
A257856
[ 1, 1, 5, 2, 1, 291, 4, 31, 4, 131, 66, 8, 113, 4, 1770, 19, 122, 27, 509, 61, 138, 1484, 1, 508, 118, 1033, 48, 314, 78, 1522, 4, 8, 169, 341, 650, 37, 3456, 1172, 221, 21, 119, 105, 34, 670, 196, 19, 30, 4, 1, 88, 4...
[ "nonn" ]
A184434
[ 1, 1, 3, 5, 8, 17, 31, 63, 129, 244, 458, 860, 1544, 2721, 4734, 8044, 13423, 22097, 35750, 57052, 89944, 139918, 215240, 327754, 493888, 737327, 1091368, 1601767, 2332587, 3372198, 4840788, 6903176, 9783032, 13780976, 19302810, 26891801 ]
[ "nonn" ]
A020518
[ 1, 11, 205, 3641, 61681, 1016801, 16519105, 266354561, 4278255361, 68585520641, 1098438933505, 17583600302081, 281406274007041, 4503049938657281, 72053196259835900, 1152886321308467200, 18446462603027743000, 295145653396718880000, 4.722348468539855e+21 ]
[ "nonn", "easy" ]
A082342
[ 0, 1, 2, 3, 4, 5, 7, 6, 8, 9, 10, 12, 11, 13, 17, 18, 16, 14, 15, 21, 19, 20, 22, 23, 24, 26, 25, 27, 31, 32, 30, 28, 29, 35, 33, 34, 36, 45, 46, 48, 49, 50, 44, 47, 42, 37, 38, 43, 39, 40, 41, 58, 59, 56, 51...
[ "nonn" ]
A293901
[ 0, 1, 1, 1, 1, 1, 1, 1, 1, 6, 1, 1, 1, 1, 6, 1, 1, 10, 1, 6, 1, 1, 1, 1, 6, 14, 10, 1, 1, 6, 1, 1, 1, 18, 6, 10, 1, 1, 14, 6, 1, 22, 1, 1, 15, 1, 1, 1, 1, 31, 18, 14, 1, 10, 6, 1, 1, 30, 1, 6, 1, ...
[ "nonn", "easy" ]
A111548
[ 1, -1, 1, -3, -2, 1, -15, -3, -3, 1, -99, -15, -3, -4, 1, -783, -99, -15, -3, -5, 1, -7083, -783, -99, -15, -3, -6, 1, -71415, -7083, -783, -99, -15, -3, -7, 1, -789939, -71415, -7083, -783, -99, -15, -3, -8, 1, -9485343, -7...
[ "sign", "tabl" ]
A048601
[ 1, 1, 1, 2, 3, 2, 7, 14, 14, 7, 42, 105, 135, 105, 42, 429, 1287, 2002, 2002, 1287, 429, 7436, 26026, 47320, 56784, 47320, 26026, 7436, 218348, 873392, 1813968, 2519400, 2519400, 1813968, 873392, 218348, 10850216, 48825972, 113927268, 179...
[ "nonn", "tabl", "nice", "easy", "look" ]
A161128
[ 0, 0, 0, 2, 17, 121, 891, 7155, 63351, 617463, 6590727, 76589127, 963486567, 13052781927, 189537379047, 2937560365287, 48409889869287, 845393769958887, 15596602532173288, 303139660882458100, 6191620542649779000 ]
[ "nonn" ]
A089655
[ 1, 1, 4, 1, 4, 1, 8, 3, 8, 3, 4, 1, 4, 1, 16, 1, 48, 1, 12, 1, 4, 1, 8, 5, 8, 45, 4, 9, 4, 1, 32, 1, 32, 1, 12, 1, 12, 1, 8, 1, 8, 1, 4, 3, 4, 3, 16, 7, 80, 7, 20, 1, 36, 1, 72, 1, 8, 1, 4, 1, 4, ...
[ "nonn" ]
A302227
[ 0, 34, 194, 934, 6110, 38736, 251254, 1610569, 10296766, 66243864, 424625879, 2726394062, 17497812841, 112298621494, 720825717366, 4626342158809, 29694255667486, 190589162278017, 1223278644711981, 7851527608519228 ]
[ "nonn" ]
A001965
[ 0, 1, 3, 4, 5, 6, 8, 9, 10, 11, 12, 14, 15, 16, 17, 19, 20, 21, 22, 24, 25, 26, 27, 29, 30, 31, 32, 33, 35, 36, 37, 38, 40, 41, 42, 43, 45, 46, 47, 48, 50, 51, 52, 53, 55, 56, 57, 58, 59, 61, 62, 63, 64, 66, ...
[ "nonn", "easy" ]
A123810
[ 1, 40, 5425, 853908, 147609509, 27054419032 ]
[ "nonn", "hard" ]
A355666
[ 1, 1, 1, 1, 0, 3, 1, 0, 2, 13, 1, 0, 0, 3, 75, 1, 0, 0, 3, 28, 541, 1, 0, 0, 0, 6, 125, 4683, 1, 0, 0, 0, 4, 10, 1146, 47293, 1, 0, 0, 0, 0, 10, 195, 8827, 545835, 1, 0, 0, 0, 0, 5, 20, 1281, 94200, 7087261, ...
[ "nonn", "tabl" ]
A227679
[ 2, 4, 4, 7, 16, 7, 11, 50, 50, 11, 16, 131, 283, 131, 16, 22, 301, 1343, 1343, 301, 22, 29, 625, 5434, 11971, 5434, 625, 29, 37, 1198, 19188, 90884, 90884, 19188, 1198, 37, 46, 2153, 60484, 592791, 1330361, 592791, 60484, 2153, ...
[ "nonn", "tabl" ]
A237436
[ 7, 19, 79, 331, 751, 1171, 7459, 10651, 18379, 78439, 78439, 399499, 644869, 1427911, 1427911, 4355311, 5715319, 43030381, 43030381, 163384621 ]
[ "nonn" ]
A196354
[ 1, 2, 0, 6, 48, 10, 2880, 14, 53760, 725778, 645120, 359251222, 6082560, 42032390426, 49201152, 2648040595230, 41845937602560, 115757203161634, 102437981698129920, 3958896348126758, 51901909523009370000, 113368395423628850, 1.2788630502806158e+22 ]
[ "nonn", "look" ]
A216588
[ 126, 1344, 2930, 28060, 55230, 538744, 969378, 10066228, 16284862, 186362560, 265582226, 3447630284, 4238980734, 64031790664, 66561185858, 1197008258212, 1031815027710, 22548844488592, 15830131853490, 428115681210300, 240803790623806, 8188893146929816 ]
[ "nonn" ]
A245984
[ 1, 1, 6, 87, 2200, 84245, 4492656, 908888155, 357260391552, 135745499491209, 49743738690284800, 18418196210352314000, 7.088670872640238e+21, 2.879857079508363e+24, 1.2549441213831407e+27, 6.1005433253046735e+29 ]
[ "nonn" ]
A139598
[ 0, 8, 16, 32, 48, 72, 96, 128, 160, 200, 240, 288, 336, 392, 448, 512, 576, 648, 720, 800, 880, 968, 1056, 1152, 1248, 1352, 1456, 1568, 1680, 1800, 1920, 2048, 2176, 2312, 2448, 2592, 2736, 2888, 3040, 3200, 3360, 3528, 3696, 387...
[ "easy", "nonn" ]
A016708
[ 4, 4, 4, 2, 6, 5, 1, 2, 5, 6, 4, 9, 0, 3, 1, 6, 4, 5, 4, 8, 5, 0, 2, 9, 3, 9, 5, 1, 0, 9, 9, 3, 1, 4, 1, 7, 5, 1, 1, 3, 8, 0, 4, 3, 6, 6, 8, 5, 4, 2, 6, 2, 5, 0, 9, 2, 0, 9, 8, 8, 5, 6, 2, 9...
[ "nonn", "cons" ]
A013418
[ 0, 2, 0, 450, 4480, 1786050, 61776000, 37240453250, 2713505184000, 2464296285701250, 308006231110240000, 397784819452992200000, 7.603668595883342e+22, 1.3296485630264162e+26 ]
[ "nonn" ]
A324715
[ 0, 3, 7, 1, 15, 8, 31, 4, 7, 19, 63, 23, 127, 44, 14, 0, 255, 31, 511, 44, 27, 78, 1023, 40, 11, 170, 4, 71, 2047, 20, 4095, 24, 74, 334, 18, 28, 8191, 764, 108, 64, 16383, 72, 32767, 177, 9, 1246, 65535, 88, 19, 57, ...
[ "nonn" ]
A242363
[ 1, 2, 1, 3, 2, 5, 3, 1, 3, 4, 8, 5, 2, 5, 3, 7, 13, 7, 8, 4, 1, 3, 4, 8, 5, 5, 11, 11, 21, 12, 7, 13, 7, 2, 5, 3, 7, 13, 7, 8, 4, 9, 18, 10, 19, 34, 18, 19, 9, 12, 21, 11, 11, 5, 1, 3, 4, 8, 5, 5, ...
[ "nonn", "easy", "tabf", "frac" ]
A109966
[ 1, 1, 8, 512, 262144, 1073741824, 35184372088832, 9223372036854776000, 1.9342813113834067e+25, 3.2451855365842673e+32, 4.3556142965880123e+40, 4.6768052394588893e+49, 4.017345110647476e+59 ]
[ "nonn", "easy" ]
A154547
[ 902501, 10824101, 19096901, 26832401, 40322501, 166926401, 255360401, 309760001, 335622401, 338928101, 404814401, 412090001, 430562501, 441840401, 651270401, 702780101, 885062501, 1006792901, 1029768101, 1160764901 ]
[ "nonn" ]
A244412
[ 18, 38, 38, 80, 102, 212, 224, 440, 440, 440, 578, 728, 1250, 1460, 1742, 2012, 2282, 3434, 3482, 4190, 4664, 4760, 4760, 6890, 7212, 7212, 7212, 8054, 10772, 12830, 12830, 13592, 13592, 14282, 17402, 17402, 17402, 18212, 22502, 22502, ...
[ "nonn" ]
A173820
[ 1, 2, -4, 1, 16, -64, 56, -16, 1, 4096, -32768, 75776, -77824, 39296, -9728, 1184, -64, 1, 4294967296, -68719476736, 375809638400, -1043677052928, 1696981843968, -1726845288448, 1143073669120, -506453819392, 152912134144, -31653363712 ]
[ "sign", "tabl", "uned" ]
A085255
[ 17, 33, 36, 40, 41, 50, 52, 57, 65, 68, 72, 73, 76, 80, 81, 85, 89, 97, 104, 108, 109, 113, 116, 117, 125, 129, 130, 132, 133, 136, 137, 144, 145, 148, 152, 153, 157, 160, 164, 170, 172, 177, 180, 185, 189, 193, 197, 200, ...
[ "nonn" ]
A307501
[ 1, 1, 0, 0, -3, 1, -1, 3, 3, 0, -12, 15, -20, 5, 53, -113, 180, -241, 153, 173, -652, 787, 628, -4801, 11635, -18699, 20775, -12315, -6109, 21253, -7015, -61060, 174382, -260676, 190623, 130141, -549572, 399845, 1577502, -6670524, 14603...
[ "sign" ]
A220225
[ 12, 157, 4244, 103153, 2517202, 61669499, 1511659860 ]
[ "nonn" ]
A013122
[ 1, 0, -4, 6, 13, -20, -454, 1302, 13213, -57528, -566304, 1146750, 83953137, -715819260, 590760166, -61357519650, 2337988853657, -32573393982320, 362267655859524, -8238027536343882, 209882071249912770 ]
[ "sign" ]
A053348
[ 8, 32, 93, 228, 524, 1007, 1911, 3485 ]
[ "nonn", "more" ]
A294337
[ 1, 2, 2, 4, 2, 4, 2, 6, 4, 4, 2, 7, 2, 4, 4, 10, 2, 7, 2, 7, 4, 4, 2, 10, 4, 4, 6, 7, 2, 8, 2, 12, 4, 4, 4, 12, 2, 4, 4, 10, 2, 8, 2, 7, 7, 4, 2, 15, 4, 7, 4, 7, 2, 10, 4, 10, 4, 4, 2, 13, 2, 4,...
[ "nonn" ]
A199788
[ 1, 0, 4, 9, 1, 8, 8, 7, 0, 8, 2, 0, 0, 4, 3, 4, 2, 1, 3, 4, 2, 7, 2, 0, 7, 6, 6, 5, 0, 0, 3, 9, 2, 6, 6, 0, 8, 2, 9, 4, 3, 9, 0, 2, 2, 5, 2, 1, 7, 1, 6, 7, 1, 4, 5, 2, 0, 4, 5, 1, 3, 7, 6, 6...
[ "nonn", "cons" ]
A381719
[ 12, 18, 20, 24, 28, 40, 44, 45, 48, 50, 52, 54, 56, 60, 63, 68, 72, 75, 76, 80, 84, 88, 90, 92, 96, 98, 99, 104, 108, 112, 116, 117, 120, 124, 126, 132, 135, 136, 140, 144, 147, 148, 152, 153, 156, 160, 162, 164, 168, ...
[ "nonn" ]
A107203
[ 19, 241, 331, 499, 571, 601, 691, 739, 769, 1009, 1129, 1249, 1291, 1531, 1579, 1699, 2011, 2089, 2131, 2161, 2521, 2689, 2731, 2851, 2971, 3001, 3049, 3259, 3331, 3499, 3691, 3739, 3889, 4051, 4129, 4219, 4339, 4441, 4561, 4729, 4801 ]
[ "nonn", "easy" ]
A104629
[ 1, 2, 6, 18, 57, 186, 622, 2120, 7338, 25724, 91144, 325878, 1174281, 4260282, 15548694, 57048048, 210295326, 778483932, 2892818244, 10786724388, 40347919626, 151355847012, 569274150156, 2146336125648, 8110508473252 ]
[ "easy", "nonn" ]
A338068
[ 31, 35, 39, 63, 67, 71, 75, 79, 83, 87, 91, 95, 99, 119, 123, 146, 158, 187, 198, 215, 218, 223, 227, 231, 234, 239, 255, 279, 283, 307, 311, 315, 331, 335, 339, 343, 346, 347, 351, 354, 355, 359, 363, 367, 370, 371, 375, ...
[ "nonn" ]
A129735
[ 5, 3, 7, 17, 11, 31, 13, 43, 127, 257, 19, 73, 41, 23, 89, 683, 241, 2731, 8191, 29, 113, 151, 331, 65537, 43691, 131071, 37, 109, 174763, 524287, 61681, 337, 5419, 397, 2113, 47, 178481, 2796203, 97, 673, 251, 601, 1801, 4051, ...
[ "nonn" ]
A168716
[ 1, 39, 1482, 56316, 2140008, 81320304, 3090171552, 117426518976, 4462207721088, 169563893401344, 6443427949251072, 244850262071540740, 9304309958718548000, 353563778431304800000, 1.3435423580389584e+22 ]
[ "nonn" ]
A132988
[ 1, 2, 3, 4, 6, 7, 9, 5, 8, 10, 16, 19, 14, 11, 12, 18, 15, 31, 17, 24, 37, 20, 21, 30, 49, 34, 13, 27, 22, 38, 32, 33, 23, 28, 25, 76, 79, 41, 42, 29, 36, 26, 48, 97, 66, 40, 53, 56, 57, 46, 39, 60, 121, 63, ...
[ "nonn" ]
A112003
[ -30, 1827, -75915, 2774695, -97362265, 3410657250, -121647896370, 4464233824050, -169525943987400, 6681570663692925, -273715584240223140, 11660420923428903000, -516518847915111940000, 2.3780637468174357e+22, -1.1372059251859349e+24 ]
[ "sign", "easy" ]
A051583
[ 1, 11, 143, 2145, 36465, 692835, 14549535, 334639305, 8365982625, 225881530875, 6550564395375, 203067496256625, 6701227376468625, 234542958176401900, 8678089452526870000, 338445488648547900000, 1.3876265034590464e+22 ]
[ "easy", "nonn" ]
A149633
[ 1, 1, 5, 15, 69, 221, 1077, 3991, 19405, 74335, 365031, 1463529, 7211393, 29565759, 146138723, 611213435, 3027868001, 12852758527, 63774054463, 273911104023, 1360855478915, 5902045457945, 29352341619833, 128334155334705, 638746295458585, 2811835621656883, 14004236...
[ "nonn", "walk" ]
A148797
[ 1, 1, 3, 8, 25, 83, 298, 998, 3889, 13971, 54308, 206572, 814236, 3160726, 12741671, 50085798, 204433734, 817602541, 3353224962, 13598332084, 56149216881, 229527402171, 954687076546, 3929609745078, 16422590530819, 68079724229740, 285531311235577, 119040379653591...
[ "nonn", "walk" ]
A215463
[ 0, 0, 0, 0, 1, 0, 0, 0, 0, 2, 10, 9, 8, 7, 7, 6, 6, 5, 4, 3, 20, 19, 19, 18, 17, 16, 18, 17, 16, 15, 14, 22, 21, 20, 19, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 15, 14, 16, 31, 56, 55, 54, 53, 52, 51, 50, ...
[ "nonn" ]
A380989
[ 1, 6, 30, 210, 900, 7776, 27000, 279936, 810000, 9261000, 24300000, 362797056, 729000000, 13060694016, 21870000000, 408410100000, 656100000000, 16926659444736, 19683000000000, 609359740010496, 590490000000000, 18010885410000000, 17714700000000000 ]
[ "nonn" ]
A053096
[ 1, 2, 4, 6, 9, 12, 16, 19, 23, 27, 31, 35, 40, 44, 49, 54, 59, 64, 69, 74, 79, 84, 90, 96, 102, 108, 114, 120, 125, 131, 136, 142, 149, 155, 161, 167, 173, 178, 185, 191, 198, 204, 210, 217, 223, 229, 235, 241, 248, 25...
[ "nonn" ]
A018558
[ 1, 2, 4, 157, 314, 628 ]
[ "nonn", "fini", "full", "easy" ]
A123657
[ 4, 593, 20494, 266497, 1969376, 10125649, 40473658, 134483969, 387958492, 1001010001, 2359733894, 5162787073, 10609354744, 20668614737, 38454800626, 68736319489, 118612097588, 198393407569, 322734873982, 512064160001 ]
[ "easy", "nonn" ]
A323229
[ 1, 2, 5, 16, 57, 211, 793, 3004, 11441, 43759, 167961, 646647, 2496145, 9657701, 37442161, 145422676, 565722721, 2203961431, 8597496601, 33578000611, 131282408401, 513791607421, 2012616400081, 7890371113951, 30957699535777, 121548660036301, 477551179875953 ]
[ "nonn", "easy" ]
A337438
[ 3, 4, 8, 15, 25, 29, 30, 46, 154, 190, 206, 217, 1183, 1410, 1664, 1832, 2225, 2810, 3385, 14358, 30802, 31545, 40933, 104071, 104072, 118506, 149689, 325853, 1094422, 1319945, 2850174, 2850175, 6957876, 10539433, 22749705, 23163299, 72507381, ...
[ "nonn" ]
A031518
[ 402, 418, 422, 446, 454, 466, 478, 482, 903, 921, 933, 939, 942, 948, 993, 1014, 1029, 1041, 1047, 1077, 1086, 1604, 1612, 1636, 1644, 1660, 1676, 1684, 1700, 1708, 1724, 1732, 1740, 1756, 1772, 1780, 1788, 1796, 1804, 1820, 1828, 183...
[ "nonn" ]
A341174
[ 29, 37, 71, 77, 85, 127, 128, 143, 215, 217, 227, 295, 296, 307, 319, 326, 329, 425, 431, 436, 439, 449, 455, 503, 524, 553, 577, 581, 583, 587, 623, 670, 707, 722, 727, 748, 755, 767, 821, 833, 871, 904, 908, 919, 920, 947, ...
[ "base", "nonn" ]
A254504
[ 512, 12324, 373348, 14550580, 801430034, 70328373238, 8348810077730, 1556719261083451, 442940186438236800, 188746754389519530000 ]
[ "nonn" ]
A023779
[ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 15, 16, 17, 18, 19, 20, 21, 25, 26, 27, 28, 29, 30, 31, 32, 37, 38, 39, 40, 41, 42, 43, 49, 50, 51, 52, 53, 54, 61, 62, 63, 64, 65, 73, 74, 75, 76, 85, 86, 87, 97, 98...
[ "nonn", "base", "fini", "full", "easy" ]
A023885
[ 6, 9, 15, 25, 30, 33, 44, 49, 51, 69, 81, 87, 91, 114, 117, 120, 121, 123, 124, 133, 135, 141, 159, 164, 169, 170, 177, 182, 207, 213, 217, 244, 247, 249, 252, 259, 267, 270, 273, 276, 282, 284, 289, 301, 303, 306, 310, 32...
[ "nonn" ]
A123262
[ 0, 0, 1, 0, 0, 1, 0, 0, 0, 2, 0, 0, 0, 1, 3, 0, 0, 0, 0, 2, 5, 0, 0, 0, 0, 0, 5, 8, 0, 0, 0, 0, 0, 1, 10, 13, 0, 0, 0, 0, 0, 0, 3, 20, 21, 0, 0, 0, 0, 0, 0, 0, 9, 38, 34, 0, 0, 0, 0, 0, 0, 0, ...
[ "nonn", "tabl" ]
A160021
[ 35, 37, 49, 289, 65569, 4294967329, 18446744073709552000, 3.402823669209385e+38, 1.157920892373162e+77 ]
[ "nonn" ]
A375029
[ 1, 2, 4, 5, 10, 12, 15, 20, 22, 33, 36, 38, 57, 60, 70, 77, 88, 90, 105, 112, 114, 171, 172, 258, 261, 290, 300, 303, 404, 406, 609, 612, 646, 665, 700, 702, 741, 760, 770, 847, 848, 954, 957, 1276, 1278, 1491, 1498, 1712,...
[ "nonn" ]
A116114
[ 13, 493, 607, 629, 757, 17927, 33247, 93869, 19467217, 31223879, 72757727, 1.3454739732766891e+28, 4.009333371361567e+28, 4.8089152118689475e+28, 6.642431774319149e+28 ]
[ "nonn", "base" ]
A121965
[ 0, 1, 1, 1, 2, 7, 33, 191, 1304, 10241, 90865, 898409, 9791634, 116601199, 1506023953, 20967734143, 313009988192, 4987192076929, 84469255319601, 1515459403675889, 28709259414522290, 572669728886769900, 11997355047207645000, 263369141309681430000 ]
[ "nonn" ]
A020674
[ 0, 2, 5, 7, 8, 13, 18, 20, 22, 23, 28, 32, 37, 38, 45, 47, 50, 52, 53, 55, 63, 70, 72, 77, 80, 82, 88, 92, 95, 98, 103, 112, 117, 118, 125, 127, 128, 130, 133, 143, 148, 152, 157, 162, 167, 173, 175, 178, 180, 182, 1...
[ "easy", "nonn" ]