id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A332954
[ 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 3, 2, 1, 1, 1, 6, 3, 2, 1, 1, 1, 9, 5, 3, 2, 1, 1, 1, 19, 8, 5, 3, 2, 1, 1, 1, 30, 13, 7, 5, 3, 2, 1, 1, 1, 60, 21, 12, 7, 5, 3, 2, 1, 1, 1, 108, 38, 17, 11, 7, 5, ...
[ "nonn", "tabl" ]
A001176
[ 1, 1, 2, 1, 4, 2, 2, 2, 2, 4, 1, 2, 4, 2, 2, 2, 4, 2, 1, 2, 2, 1, 2, 2, 4, 4, 2, 2, 1, 2, 1, 2, 2, 4, 2, 2, 4, 1, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 4, 2, 2, 4, 2, 2, 2, 2, 1, 1, 2, 4, 1, 2, 2...
[ "nonn", "easy" ]
A030486
[ 5, 15, 16, 25, 75, 235, 475, 515, 516, 725, 5125, 7525, 22925, 23585, 72475, 505525, 515415, 2501125, 15008516, 23711235, 72267325, 149081275, 250133275, 256032335, 505228925, 2294919525, 5153315075, 15040686675, 50222133125 ]
[ "nonn", "base" ]
A134311
[ 1, 2, 7, 20, 51, 122, 281, 632, 1399, 3062, 6645, 14324, 30707, 65522, 139249, 294896, 622575, 1310702, 2752493, 5767148, 12058603, 25165802, 52428777, 109051880, 226492391, 469762022, 973078501, 2013265892, 4160749539 ]
[ "nonn", "easy" ]
A009895
[ 1, 4, 10, 19, 31, 50, 82, 106, 130, 168, 203, 260, 312, 349, 399, 467, 544, 611, 677, 743, 828, 937, 1015, 1099, 1197, 1297, 1426, 1540, 1618, 1736, 1893, 2017, 2148, 2274, 2379, 2550, 2748, 2869, 2988, 3170, 3323, 3526, 3729, 383...
[ "nonn" ]
A299257
[ 1, 5, 12, 22, 36, 56, 82, 111, 144, 183, 226, 272, 324, 382, 442, 505, 576, 653, 730, 810, 900, 996, 1090, 1187, 1296, 1411, 1522, 1636, 1764, 1898, 2026, 2157, 2304, 2457, 2602, 2750, 2916, 3088, 3250, 3415, 3600, 3791, 3970, 415...
[ "nonn", "easy" ]
A169523
[ 1, 30, 870, 25230, 731670, 21218430, 615334470, 17844699630, 517496289270, 15007392388830, 435214379276070, 12621216999006030, 366015292971174850, 10614443496164071000, 307818861388758060000, 8.926746980273984e+21 ]
[ "nonn" ]
A373644
[ 1, 1, 1, 1, 2, 4, 6, 8, 11, 18, 29, 44, 64, 96, 148, 228, 345, 519, 786, 1198, 1824, 2766, 4190, 6358, 9661, 14674, 22268, 33786, 51284, 77866, 118212, 179426, 272333, 413391, 627547, 952613, 1445995, 2194911, 3331793, 5057593, 7677250,...
[ "nonn", "easy" ]
A271343
[ 1, 1, 5, 1, 1, 0, 9, 3, 1, -2, 1, 13, 5, 0, 1, 0, 0, 17, 7, 3, 1, -6, 0, 1, 21, 9, 0, 0, 1, 0, 3, 0, 25, 11, 0, 0, 1, -10, 0, 3, 29, 13, 7, 0, 1, 1, 0, 0, 0, 0, 33, 15, 0, 0, 0, 1, -14, 3, 5, 0, 3...
[ "sign", "tabf" ]
A006642
[ 1, 1, 1, 2, 1, 3, 3, 2, 4, 1, 5, 2, 4, 3, 1, 7, 5, 3, 6, 2, 8, 5, 3, 8, 2, 10, 2, 5, 5, 3, 10, 7, 4, 10, 1, 11, 5, 8, 2, 13, 4, 9, 4, 3, 14, 4, 7, 5, 12, 2, 15, 6, 7, 12, 4, 13, 2, 11, 3, 14, 4, ...
[ "nonn" ]
A051929
[ 5, 1, 21, 73, 325, 1361, 5781, 24473, 103685, 439201, 1860501, 7881193, 33385285, 141422321, 599074581, 2537720633, 10749957125, 45537549121, 192900153621, 817138163593, 3461452808005, 14662949395601, 62113250390421, 263115950957273, 1114577054219525 ]
[ "easy", "nonn" ]
A027612
[ 1, 5, 13, 77, 87, 223, 481, 4609, 4861, 55991, 58301, 785633, 811373, 835397, 1715839, 29889983, 30570663, 197698279, 201578155, 41054655, 13920029, 325333835, 990874363, 25128807667, 25472027467, 232222818803, 235091155703, 6897956948587, 6975593267347 ]
[ "nonn", "easy", "frac" ]
A175100
[ 5, 7, 11, 13, 16, 22, 23, 35, 35, 35, 36, 43, 43 ]
[ "nonn", "more" ]
A143537
[ 0, 1, 1, 2, 2, 1, 2, 2, 1, 0, 3, 3, 2, 1, 1, 3, 3, 2, 1, 1, 0, 4, 4, 3, 2, 2, 1, 1, 4, 4, 3, 2, 2, 1, 1, 0, 4, 4, 3, 2, 2, 1, 1, 0, 0, 4, 4, 3, 2, 2, 1, 1, 0, 0, 0, 5, 5, 4, 3, 3, 2, 2, 1, 1...
[ "nonn", "tabl" ]
A169489
[ 1, 44, 1892, 81356, 3498308, 150427244, 6468371492, 278139974156, 11960018888708, 514280812214444, 22114074925221092, 950905221784507000, 40888924536733800000, 1.7582237550795534e+21, 7.56036214684208e+22 ]
[ "nonn" ]
A172782
[ 0, 8953, 174322342281087, 6.307079511728702e+26, 1.6791962060413241e+41, 1.636420745348844e+57 ]
[ "nonn" ]
A297225
[ 1, 9, 24, 57, 182, 535, 1513, 4415, 12832, 37110, 107661, 312229, 904915, 2623749, 7607302, 22054261, 63940404, 185379485, 537454173, 1558199157, 4517574360, 13097454856, 37972451701, 110090662857, 319177485549, 925367027389 ]
[ "nonn" ]
A258189
[ 10101, 11111, 101121, 220212, 222001, 1022011, 1111221, 2010002, 2101001, 2121001, 10101022, 10122201, 10201001, 10212111, 11111112, 11121201, 12010221, 20210202, 21121121, 100001111, 101010101, 102112011, 110020001, 112112001, 120002211, 122000101, 201201201, 2...
[ "nonn", "base" ]
A338801
[ 17, 0, 1, 72, 24, 575, 450, 232, 60, 15, 0, 3, 1728, 1668, 948, 144, 24, 12, 8799, 10080, 6321, 3052, 898, 490, 161, 14, 35, 14, 7, 22688, 24080, 12784, 4160, 1248, 272, 80, 32, 78327, 101142, 70254, 39708, 19584, 6894, 2369, 10...
[ "nonn", "tabf" ]
A275858
[ 1, 1, -1, -4, -4, 4, 17, 17, -17, -72, -72, 72, 305, 305, -305, -1292, -1292, 1292, 5473, 5473, -5473, -23184, -23184, 23184, 98209, 98209, -98209, -416020, -416020, 416020, 1762289, 1762289, -1762289, -7465176, -7465176, 7465176, 31622993, 3...
[ "easy", "sign" ]
A184581
[ 4, 7, 11, 14, 17, 21, 24, 28, 31, 34, 38, 41, 45, 48, 52, 55, 58, 62, 65, 69, 72, 75, 79, 82, 86, 89, 93, 96, 99, 103, 106, 110, 113, 116, 120, 123, 127, 130, 134, 137, 140, 144, 147, 151, 154, 157, 161, 164, 168, 171,...
[ "nonn" ]
A065137
[ 0, 2, 10, 30, 68, 130, 222, 350, 520, 738, 2, 4, 12, 32, 70, 132, 224, 352, 522, 740, 10, 12, 20, 40, 78, 140, 232, 360, 530, 748, 30, 32, 40, 60, 98, 160, 252, 380, 550, 768, 68, 70, 78, 98, 136, 198, 290, 418, 588, 8...
[ "base", "easy", "nonn" ]
A233973
[ 0, 0, 1, 5, 9, 13, 32, 54, 82, 116, 159, 199, 227, 273, 331, 380, 429, 487, 536, 609, 679, 743, 816, 895, 953, 1008, 1042, 1067, 1104, 1180, 1253, 1332, 1429, 1532, 1626, 1675, 1733, 1812, 1921, 2045, 2169, 2317, 2420, 2535, 265...
[ "nonn" ]
A162364
[ 1, 22, 252, 2002, 12396, 63734, 283107, 1116236, 3983485, 13057330, 39764011, 113533312, 306173263, 784654154, 1920802566, 4510960122, 10201294213, 22286443124, 47167714715, 96947735390, 193938666735, 378324531180, 720920510114, 1344018408128, 2454841642382 ]
[ "nonn", "fini", "full" ]
A126844
[ 1, 2173, 252, 725, 436, 543, 832, 994, 601, 521, 741, 349, 73, 2002, 22, 683, 1434, 955, 1576, 1929, 949, 1989, 1727, 30, 1354, 445, 1855, 1222, 768, 1669, 1273, 2091, 2184, 736, 247, 719, 1472, 1722, 820, 575, 2177, 1391, 2104, 1...
[ "nonn" ]
A332178
[ 8, 787, 77877, 7778777, 777787777, 77777877777, 7777778777777, 777777787777777, 77777777877777780, 7777777778777778000, 777777777787777800000, 7.777777777787778e+22, 7.777777777778777e+24, 7.777777777777878e+26, 7.777777777777788e+28, 7.777777777777778e+30 ]
[ "nonn", "base", "easy" ]
A075496
[ 1, 1, 2, 5, 14, 40, 118, 349, 1042, 3112, 9322, 27926, 83738, 251096, 753170, 2259161, 6777134, 20330360, 60990038, 182967002, 548897894, 1646684360, 4940043758, 14820103348, 44460282118, 133380762616, 400142204110, 1200426361234, 3601278832606, 108038357446...
[ "nonn" ]
A107568
[ 1, 2450, 1054410, 178632874, 16279466290, 932002722658, 36851267268410, 1073506447004090, 24151651704068320, 435039340215456700, 6455390549471543000, 80753595505384980000, 868046221211052700000, 8.147643908119591e+21, 6.769431859577886e+22, 5.037209511634127e+23 ]
[ "nonn" ]
A132301
[ 1, -3, 1, 3, -1, 0, 1, -6, 0, 6, -3, 3, 4, -12, 1, 12, -6, 3, 5, -24, 1, 24, -10, 6, 11, -42, 4, 42, -19, 12, 17, -72, 4, 69, -31, 18, 31, -120, 9, 114, -50, 30, 46, -189, 11, 180, -79, 48, 77, -294, 21, 276, -12...
[ "sign" ]
A294007
[ 1, 2, 7, 22, 73, 240, 811, 2792, 9857, 35644, 132119, 502832, 1964131, 7885792, 32523695, 137915764, 600865387, 2690302074, 12367812720, 58364059306, 282421855885, 1400551909446, 7109841300492, 36919536804334, 195890584265442, 1061185175436116 ]
[ "nonn" ]
A328237
[ 1, 4, 3, 5, 2, 12, 2, 4, 3, 16, 2, 9, 3, 4, 1, 21, 1, 24, 2, 1, 3, 44, 4, 8, 4, 3, 6, 31, 1, 80, 1, 8, 8, 5, 4, 21, 3, 3, 4, 41, 3, 48, 4, 4, 3, 112, 4, 4, 1, 4, 8, 81, 2, 12, 1, 8, 4, 92, 4, 33, ...
[ "nonn" ]
A067040
[ 1, 1, 4, 27, 256, 3125, 46656, 823543, 16777216, 387420489, 10, 121, 1728, 28561, 537824, 11390625, 268435456, 6975757441, 198359290368, 6131066257801, 400, 9261, 234256, 6436343, 191102976, 6103515625, 208827064576, 7625597484987 ]
[ "nonn", "base", "easy" ]
A211924
[ 0, 2, 9, 31, 80, 171, 322, 554, 891, 1360, 1991, 2817, 3874, 5201, 6840, 8836, 11237, 14094, 17461, 21395, 25956, 31207, 37214, 44046, 51775, 60476, 70227, 81109, 93206, 106605, 121396, 137672, 155529, 175066, 196385, 219591, 244792, 272099, ...
[ "nonn" ]
A238158
[ 0, 0, 1, 0, 1, 2, 0, 2, 2, 4, 0, 2, 3, 4, 6, 0, 3, 4, 6, 6, 9, 0, 3, 4, 6, 8, 9, 12, 0, 4, 5, 8, 9, 12, 12, 16, 0, 4, 6, 8, 10, 12, 15, 16, 20, 0, 5, 6, 10, 12, 15, 16, 20, 20, 25, 0, 5, 7, 10, 12, ...
[ "tabl", "nonn" ]
A101804
[ 23, 113, 2, 2, 113, 11, 11, 2, 2, 113, 2, 2, 2, 2, 11, 11, 2, 2, 113, 11, 11, 11, 11, 2, 2, 2, 2, 11, 11, 2, 2, 113, 2, 2, 2, 2, 2, 2, 2, 2, 11, 11, 11, 11, 2, 2, 2, 2, 11, 11, 2, 2, 113, 11, 11, 11, 11, ...
[ "base", "easy", "nonn" ]
A075302
[ 0, 2, 1, 4, 5, 3, 6, 9, 11, 7, 8, 13, 19, 23, 15, 10, 17, 27, 39, 47, 31, 12, 21, 35, 55, 79, 95, 63, 14, 25, 43, 71, 111, 159, 191, 127, 16, 29, 51, 87, 143, 223, 319, 383, 255, 18, 33, 59, 103, 175, 287, 447, 6...
[ "nonn", "tabl" ]
A027593
[ 1, 2, 3, 5, 6, 10, 12, 17, 22, 29, 36, 48, 58, 73, 91, 111, 134, 165, 197, 236, 283, 335, 395, 469, 547, 640, 748, 868, 1002, 1164, 1335, 1534, 1760, 2011, 2288, 2612, 2958, 3352, 3795, 4280, 4816, 5427, 6084, 6817, 7636, 8527...
[ "nonn", "eigen" ]
A212776
[ 11, 27, 66, 162, 397, 973, 2385, 5846, 14329, 35122, 86088, 211011, 517211, 1267741, 3107372, 7616509, 18668898, 45759514, 112161581, 274920321, 673859821, 1651704234, 4048508001, 9923336574, 24323184920, 59618790539, 146132186103 ]
[ "nonn" ]
A008511
[ 0, 16, 80, 240, 544, 1040, 1776, 2800, 4160, 5904, 8080, 10736, 13920, 17680, 22064, 27120, 32896, 39440, 46800, 55024, 64160, 74256, 85360, 97520, 110784, 125200, 140816, 157680, 175840, 195344, 216240, 238576, 262400, 287760, 314704, 343280, ...
[ "nonn", "easy" ]
A017904
[ 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 16, 20, 25, 31, 38, 46, 55, 65, 76, 89, 105, 125, 150, 181, 219, 265, 320, 385, 461, 550, 655, 780, 930, 1111, ...
[ "nonn", "easy" ]
A035410
[ 3, 5, 31, 39, 46, 58, 63, 196, 205, 210, 254, 257, 266, 273, 287, 296, 299, 354, 361, 916, 925, 930, 984, 1000, 1003, 1012, 1037, 1044, 1180, 1185, 1196, 1213, 1227, 1236, 1239, 1310, 1312, 1337, 1344, 1352, 1383, 1388, 1561, 1564...
[ "nonn" ]
A017752
[ 1, 89, 4005, 121485, 2794155, 51971283, 814216767, 11050084695, 132601016340, 1429144287220, 14005614014756, 126050526132804, 1050421051106700, 8160963550905900, 59458448728028700, 408281347932463740 ]
[ "nonn" ]
A141453
[ 2, 3, 5, 7, 17, 31, 127, 257, 8191, 65537, 131071, 524287, 2147483647, 2305843009213694000, 6.189700196426902e+26, 1.6225927682921336e+32, 1.7014118346046923e+38 ]
[ "nonn" ]
A237992
[ 31, 71, 151, 191, 311, 1031, 1991, 3191, 5351, 5591, 10391, 15791, 17111, 27191, 31391, 35591, 42311, 50951, 70391, 93551, 107159, 117911, 119831, 126551, 166871, 180311, 191831, 216191, 255191, 259871, 327071, 366791, 435431, 465911, 514751, 576...
[ "nonn" ]
A027500
[ 27, 227, 1479, 238718, 43679400, 2799291274, 2547646644816, 19711917728876750, 1872052271615279400, 2.9087736673828893e+25, 1.479345652569866e+31, 1.781936407838264e+34 ]
[ "nonn" ]
A088967
[ 2, 4, 8, 10, 14, 20, 22, 28, 32, 34, 38, 44, 50, 52, 58, 62, 64, 70, 74, 80, 88, 92, 94, 98, 100, 104, 118, 122, 128, 130, 140, 142, 148, 154, 158, 164, 170, 172, 182, 184, 188, 190, 202, 214, 218, 220, 224, 230, 232, ...
[ "easy", "nonn" ]
A106998
[ 2, 67, 113, 173, 227, 307, 383, 433, 607, 673, 887, 907, 983, 1093, 1117, 1427, 1433, 1627, 1723, 1877, 1933, 2143, 2237, 2377, 2383, 2447, 2473, 2663, 2903, 2957, 3533, 3593, 4027, 4513, 4597, 4703, 4783, 4817, 4933, 5087, 5233, 5347...
[ "nonn", "easy" ]
A019493
[ 4, 9, 20, 44, 96, 209, 455, 990, 2154, 4686, 10194, 22175, 48236, 104922, 228220, 496402, 1079712, 2348431, 5107921, 11109837, 24164007, 52556739, 114310581, 248624146, 540753403, 1176127722, 2558050589, 5563694894 ]
[ "nonn", "easy" ]
A238034
[ 596, 6218, 157940, 1893380, 40950296, 527036922, 10550112212, 141752654204, 2711112696296, 37493014845308, 695804487003320, 9823580008527992, 178448573838601400, 2558858435505629000, 45744924879828300000 ]
[ "nonn" ]
A355121
[ 1, 1, 5, 74, 2778, 248244, 51212444, 23984832416, 25218677193200, 59000757443457070, 304720138059811500000, 3.4490593948964583e+24, 8.499120337144953e+28, 4.5322325382844854e+33, 5.2020483257400964e+38 ]
[ "nonn" ]
A169691
[ 1, 3, 4, 8, 11, 12, 21, 29, 32, 33, 55, 76, 84, 87, 88, 144, 199, 220, 228, 231, 232, 377, 521, 576, 597, 605, 608, 609, 987, 1364, 1508, 1563, 1584, 1592, 1595, 1596, 2584, 3571, 3948, 4092, 4147, 4168, 4176, 4179, 4180, 6765...
[ "nonn" ]
A373789
[ 1, 2, 3, 4, 5, 6, 7, 10, 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, 21...
[ "nonn" ]
A071881
[ 1, 1, 1, 1, 3, 222 ]
[ "nonn", "hard", "nice" ]
A103351
[ 1, 513, 10097891, 5170139875, 10097934603139728, 373997614931101, 1.5092153145114982e+22, 7.727182467755471e+24, 4.106541588424891e+30, 4.106541592523202e+30 ]
[ "nonn", "frac", "easy" ]
A141076
[ 13, 17, 23, 29, 37, 41, 43, 59, 67, 71, 73, 89, 97, 103, 107, 131, 149, 157, 167, 173, 179, 181, 197, 199, 211, 223, 227, 229, 241, 257, 271, 281, 283, 293, 307, 311, 313, 317, 331, 337, 359, 379, 397, 409, 421, 431, 433, ...
[ "nonn", "fini", "full", "easy", "less" ]
A126880
[ 5, 12, 24, 58, 128, 309, 715, 1727, 4082, 9838, 23503, 56600, 135597, 326195, 782636 ]
[ "nonn" ]
A146264
[ 1, 1, 5, 17, 45, 281, 4672, 78267, 1571678, 52679419, 3071977536, 240721783237, 27403978688452, 4744390760050525, 1239071516389632300 ]
[ "nonn" ]
A080836
[ 1, 1, 3, 19, 169, 1881, 24331, 367963, 6350289, 122905009, 2634512851, 61965769251, 1586289593593, 43894853071369, 1305358562020059, 41511720594216810, 1405569865796576300, 50480123666011824000, 1.9165089847005023e+21, 7.668655009962438e+22 ]
[ "easy", "nonn" ]
A296772
[ 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 3, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 2, 3, 1, 2, 2, 1, 3, 4, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 1, 1, 2, 3, 1, 1, 2, 2, 1, 2, 1, 2, 1, 3...
[ "nonn", "tabf" ]
A310008
[ 1, 3, 4, 7, 13, 21, 22, 18, 16, 24, 31, 35, 45, 50, 47, 36, 33, 46, 59, 69, 75, 74, 68, 54, 54, 71, 87, 101, 104, 99, 86, 71, 76, 99, 121, 131, 128, 120, 104, 92, 101, 127, 153, 160, 153, 138, 121, 114, 129, 161 ]
[ "nonn" ]
A230148
[ 397575, 3145425129, 7096702977, 53164445037705, 130468907286855, 1229923663366167, 2774951736355071 ]
[ "nonn" ]
A246436
[ 0, 0, 0, 1, 1, 0, 2, 4, 2, 4, 4, 3, 6, 4, 8, 11, 8, 4, 8, 12, 15, 10, 14, 13, 11, 16, 17, 12, 15, 19, 21, 26, 16, 22, 26, 16, 19, 21, 21, 31, 28, 34, 23, 28, 31, 34, 34, 36, 29, 29, 33, 40, 43, 36, 40, 36, ...
[ "nonn" ]
A376817
[ 1, 3, 5, 4, 11, 10, 16, 25, 31, 41, -1, 57, 56, 75, 73, 80, -1, 108, 110, 142, 112, 149, 148, 155, 154, 168, 194, 203, 221, 238, -1, 271, -1, -1, 308, -1, 360, 414, 416, 437, -1, -1, 484, -1, -1, 529, -1, 660, -1, 740,...
[ "sign", "base", "tabf" ]
A254385
[ 21304, 406548, 8533796, 175329586, 3587965682, 73923120984, 1521733260456, 31311650491630, 644509809793486, 13265570942855016, 273033267247903520, 5619741082288575000, 115668783693718830000, 2.3807579929530146e+21 ]
[ "nonn" ]
A060139
[ 0, 1, 2, 5, 9, 14, 18, 26, 41, 45, 53, 77, 81, 122, 126, 134, 158, 162, 230, 234, 242, 365, 369, 377, 401, 405, 473, 477, 485, 689, 693, 701, 725, 729, 1094, 1098, 1106, 1130, 1134, 1202, 1206, 1214, 1418, 1422, 1430, 1454, ...
[ "nonn" ]
A390461
[ 3, 3, 7, 7, 6, 7, 7, 0, 4, 4, 1, 1, 0, 3, 6, 5, 0, 0, 0, 2, 5, 6, 7, 5, 9, 5, 3, 3, 9, 3, 2, 9, 8, 9, 2, 6, 4, 3, 9, 2, 5, 6, 8, 9, 5, 7, 2, 8, 8, 3, 8, 9, 6, 2, 5, 8, 2, 4, 3, 7, 3, 8, 7, 5...
[ "nonn", "cons" ]
A115291
[ 1, 4, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8...
[ "nonn", "easy" ]
A062587
[ 2, 19, 41, 43, 337, 479, 9127, 37549, 44017, 59971, 128327, 176191, 193601 ]
[ "nonn", "hard" ]
A119316
[ 1, 2, 3, 5, 6, 7, 10, 11, 12, 13, 14, 15, 17, 18, 19, 21, 22, 23, 24, 26, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 45, 46, 47, 48, 50, 51, 53, 54, 55, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 69, 70, ...
[ "nonn" ]
A324904
[ 0, 0, 1, 0, 1, 2, 1, 0, 0, 1, 1, 2, 1, 2, 1, 0, 1, 0, 1, 1, 1, 2, 1, 2, 0, 1, 1, 3, 1, 2, 1, 0, 1, 1, 1, 0, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 0, 0, 1, 1, 1, 2, 1, 3, 1, 1, 1, 3, 1, 2, 1, 0...
[ "nonn" ]
A153762
[ 1, 4, 8, 10, 11, 13, 16, 23, 28, 29, 31, 34, 38, 41, 43, 49, 50, 53, 55, 56, 64, 70, 71, 73, 74, 76, 79, 83, 94, 95, 100, 106, 109, 115, 116, 118, 121, 125, 128, 130, 136, 140, 143, 148, 149, 151, 155, 160, 161, 164, ...
[ "nonn", "easy" ]
A087887
[ 0, 24, 168, 540, 1248, 2400, 4104, 6468, 9600, 13608, 18600, 24684, 31968, 40560, 50568, 62100, 75264, 90168, 106920, 125628, 146400, 169344, 194568, 222180, 252288, 285000, 320424, 358668, 399840, 444048, 491400, 542004, 595968, 653400, 714408, ...
[ "easy", "nonn" ]
A116509
[ 41, 109, 221, 629, 1285, 3665, 7489, 21361, 43649, 124501, 254405, 725645, 1482781, 4229369, 8642281, 24650569, 50370905, 143674045, 293583149, 837393701, 1711127989, 4880688161, 9973184785, 28446735265, 58127980721 ]
[ "nonn" ]
A280322
[ 1, 13, 34, 110, 74, 306, 339, 811, 804, 1340, 1437, 2469, 1725, 2840, 2245, 4953, 4511, 8663, 5975, 11191, 8568, 15588, 9696, 18380, 11064, 20397, 17314, 23105, 22379, 31134, 25387, 35486, 27603, 48487, 36645, 65610, 44926, 66801, 45749, ...
[ "nonn", "easy" ]
A185956
[ 2, 3, 5, 7, 13, 11, 19, 17, 29, 23, 37, 43, 31, 47, 41, 61, 53, 67, 71, 59, 73, 89, 79, 83, 103, 101, 107, 109, 97, 127, 131, 113, 139, 137, 151, 157, 149, 163, 173, 181, 191, 167, 193, 211, 179, 199, 223, 197, 227, 23...
[ "nonn" ]
A223012
[ 1, 1, 2, 1, 4, 4, 4, 7, 10, 8, 5, 18, 24, 34, 16, 10, 41, 117, 169, 101, 32, 12, 119, 284, 840, 557, 331, 64, 34, 295, 1673, 4685, 6240, 4108, 1044, 128, 43, 825, 4429, 27159, 35471, 47139, 14040, 3406, 256, 101, 2060, 265...
[ "nonn", "tabl" ]
A062144
[ 1, 54, 1890, 55440, 1496880, 38918880, 998917920, 25686460800, 667847980800, 17660868825600, 476843458291200, 13178219210956800, 373382877643776000, 10856825211488256000, 324153781314435100000, 9.940715960309341e+21, 3.131325527497443e+23, 1.013075905955055e+25 ]
[ "nonn", "easy" ]
A283761
[ 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 2, 3, 2, 1, 1, 1, 1, 3, 4, 3, 3, 3, 2, 3, 4, 5, 5, 4, 5, 6, 5, 7, 9, 8, 7, 8, 9, 10, 11, 12, 12, 12, 13, 14, 16, 18, 18, 18, 17, 18, 22, 24, 26, 28, 27, 27,...
[ "nonn" ]
A063113
[ 1, 2, 4, 5, 7, 9, 10, 11, 13, 14, 16, 18, 20, 24, 28, 29, 31, 32, 34, 36, 37, 38, 40, 41, 43, 45, 47, 51, 55, 57, 59, 63, 65, 69, 73, 77, 85, 86, 88, 90, 91, 92, 94, 95, 97, 99, 101, 105, 109, 110, 112, 113, 115,...
[ "nonn", "base" ]
A339325
[ -1, 0, 1, -8, -35, 627, -20965, -761577, 72676071, -3470319335, -4692803610731, 418741237461085, 180890439981934940, -2.2442766555466278e+21, -7.645830007266547e+23, 1.2199909914654266e+28, -2.962265547142551e+32, -1.8022467244733634e+36 ]
[ "sign", "frac" ]
A249868
[ 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 32, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 32, 1, 2, 2, 4, 2, 4, 2, 4, 6, 2, 94, 1, 2, 2, 4, 2, 4, 2, 4, 6, 65 ]
[ "nonn", "fini", "full" ]
A388585
[ 9, 1, 7, 1, 4, 8, 8, 4, 8, 3, 3, 8, 1, 3, 0, 7, 9, 0, 9, 5, 6, 9, 6, 4, 4, 5, 1, 5, 3, 8, 2, 0, 7, 7, 0, 4, 8, 3, 4, 9, 8, 8, 2, 2, 3, 2, 7, 5, 0, 9, 6, 3, 2, 4, 3, 2, 9, 0, 2, 6, 8, 4, 7, 4...
[ "nonn", "cons" ]
A287596
[ 1, 1, 1, 4, 12, 96, 480, 5760, 8064, 645120, 5806080, 116121600, 1277337600, 6131220480, 398529331200, 11158821273600, 167382319104000, 5356234211328000, 18211196318515200, 3278015337332736000, 62282291409321980000, 146546568021934080000, 5.231712478383047e+22 ]
[ "nonn", "easy" ]
A192580
[ 2, 5, 11, 23, 47 ]
[ "nonn", "fini", "full" ]
A246804
[ 1, 3, 15, 135, 645, 1373, 195317, 237249 ]
[ "nonn", "more", "base", "hard" ]
A042804
[ 30, 31, 61, 336, 6781, 34241, 41022, 75263, 4556802, 4632065, 9188867, 50576400, 1020716867, 5154160735, 6174877602, 11329038337, 685917177822, 697246216159, 1383163393981, 7613063186064, 153644427115261, 775835198762369, 929479625877630 ]
[ "nonn", "frac", "easy" ]
A321096
[ 8, 8, 0, 5, 4, 0, 1, 7, 5, 7, 6, 8, 8, 6, 6, 3, 3, 7, 3, 4, 7, 6, 9, 3, 9, 9, 9, 5, 4, 3, 7, 6, 3, 9, 8, 7, 6, 4, 1, 1, 5, 6, 2, 8, 7, 1, 4, 8, 4, 5, 3, 8, 1, 4, 6, 8, 5, 1, 6, 9, 4, 3, 7, 5...
[ "nonn", "cons" ]
A299794
[ 1, 1, 1, 1, 1, 3, 1, 1, 4, 2, 1, 1, 2, 3, 1, 1, 2, 2, 1, 1, 6, 3, 1, 3, 3, 2, 2, 1, 3, 4, 2, 1, 5, 4, 4, 5, 1, 2, 3, 2, 5, 5, 2, 2, 8, 2, 2, 1, 5, 2, 4, 3, 4, 4, 4, 3, 6, 3, 2, 3, 3, 4, 3, 1...
[ "nonn" ]
A205473
[ 11143, 405702, 15614579, 637115198, 26272023365, 1094476686239, 45724154665434, 1914758450334723, 80250258826348340, 3365536894872561700, 141181596884768960000, 5.923561349136375e+21, 2.485571822835202e+23 ]
[ "nonn" ]
A274497
[ 0, 0, 2, 4, 16, 32, 96, 192, 512, 1024, 2560, 5120, 12288, 24576, 57344, 114688, 262144, 524288, 1179648, 2359296, 5242880, 10485760, 23068672, 46137344, 100663296, 201326592, 436207616, 872415232, 1879048192, 3758096384, 8053063680 ]
[ "nonn", "easy" ]
A385484
[ 1, 2, 3, 5, 10, 12, 42, 84, 88, 90, 99, 130, 165, 184, 187, 209, 221, 252, 299, 434, 450, 459, 486, 525, 555, 611, 675, 702, 726, 858, 899, 975, 984, 1034, 1036, 1104, 1107, 1197, 1275, 1357 ]
[ "nonn", "base", "more" ]
A298130
[ 0, 10, 62, 233, 2621, 21537, 175014, 1557284, 13225388, 115057043, 995377715, 8609735775, 74634586211, 646239250543, 5597827267858, 48490327697080, 420018142359036, 3638291956178446, 31515344567810130, 272991120320041380 ]
[ "nonn" ]
A214204
[ 0, 0, 0, 0, 0, 8, 16, 48, 160, 560, 1952, 7008, 25536, 94000, 348640, 1301664, 4884928, 18410208, 69632320, 264176320, 1004907904, 3831461936, 14638340960, 56028848160, 214804352960, 824741125536, 3170860158656, 12205939334976, 47038828816512, 18146588928176...
[ "nonn", "changed" ]
A240768
[ 2, 5, 773, 3373, 3947, 4643, 5113, 6397, 6967, 7937, 15647, 16823, 24373, 33547, 34337, 37643, 56983, 57853, 59743, 62383, 63347, 63617, 69337, 72467, 72617, 75653, 76367, 87643, 92683, 97883, 98317, 121997, 124337, 163853, 213613, 236653, 2424...
[ "nonn", "base", "fini" ]
A135022
[ 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0...
[ "easy", "nonn" ]
A037116
[ 3, 112, 56, 28, 14, 7, 260, 130, 65, 2406, 1203, 44512, 22256, 11128, 5564, 2782, 1391, 51468, 25734, 12867, 476080, 238040, 119020, 59510, 29755, 1100936, 550468, 275234, 137617, 5091830, 2545915 ]
[ "nonn" ]
A118568
[ 21, 25, 43, 49, 63, 67, 69, 87, 201, 205, 223, 241, 261, 267, 283, 285, 289, 409, 421, 427, 429, 463, 483, 487, 489, 601, 621, 643, 645, 685, 801, 805, 823, 841, 867, 883, 885, 2001, 2023, 2065, 2067, 2083, 2085, 2209, 2221, 2...
[ "base", "nonn" ]
A245184
[ 1, 2, 1, 1, 1, 4, 4, 2, 1, 5, 15, 17, 10, 4, 1, 30, 85, 97, 61, 25, 7, 1, 210, 595, 691, 451, 192, 57, 11, 1, 1680, 4844, 5778, 3904, 1724, 536, 117, 16, 1, 15120, 44604, 54846, 38396, 17593, 5700, 1339, 219, 22, 1, 15...
[ "nonn", "tabf" ]
A163312
[ 1, 3, 8, 17, 34, 64, 114, 195, 325, 529, 840, 1303, 1977, 2940 ]
[ "nonn", "more" ]
A347151
[ 9, 9, 5, 3, 2, 2, 2, 6, 5, 0, 1, 8, 9, 5, 2, 7, 3, 4, 1, 6, 2, 0, 6, 9, 2, 5, 6, 3, 6, 7, 2, 5, 2, 9, 2, 8, 6, 1, 0, 8, 9, 1, 7, 9, 7, 0, 4, 0, 0, 6, 0, 0, 7, 6, 7, 3, 8, 3, 5, 2, 3, 2, 6, 2...
[ "nonn", "cons" ]