id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A043537
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2...
[ "nonn", "base", "easy" ]
A141724
[ 1, 1, 1, 1, 4, 1, 1, 15, 6, 1, 1, 40, 36, 8, 1, 1, 85, 160, 60, 10, 1, 1, 156, 615, 340, 90, 12, 1, 1, 259, 2016, 1715, 595, 126, 14, 1, 1, 400, 5656, 7616, 3500, 952, 168, 16, 1, 1, 585, 13896, 30408, 18396, 6300, ...
[ "nonn", "tabl" ]
A153834
[ 0, 3, 23, 27, 29, 33, 35, 46, 50, 52, 56, 58, 3655, 3659, 3667, 3677, 3681, 3747, 3751, 3759, 3763, 3771, 277, 281, 283, 287, 289, 299, 301, 305, 307, 311, 313, 323, 325, 329, 331, 335, 337, 347, 349, 353, 355, 359, 361, 396, ...
[ "nonn" ]
A352591
[ 1, 8, 306, 7546, 210690, 5684228, 154869092, 4207660108, 114411435032, 3110251075956, 84557403666284, 2298788023809188, 62495515282157930, 1699018055917569300, 46189937030173640000, 1.2557311735538102e+21, 3.4138623221741e+22, 9.281011756180084e+23 ]
[ "nonn", "easy" ]
A378888
[ 1, 1, 3, 2, 5, 1, 7, 1, 9, 1, 11, 2, 13, 1, 15, 4, 17, 1, 19, 2, 21, 1, 23, 3, 25, 1, 27, 2, 29, 1, 31, 1, 33, 1, 35, 2, 37, 1, 39, 1, 41, 1, 43, 2, 45, 1, 47, 4, 49, 1, 51, 2, 53, 1, 55, 1, 57, 1, 59...
[ "nonn", "easy" ]
A248148
[ 1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 11, 12, 13, 14, 15, 15, 16, 17, 18, 19, 19, 20, 21, 22, 23, 23, 24, 25, 26, 27, 27, 28, 29, 30, 31, 31, 32, 33, 34, 35, 35, 36, 37, 38, 39, 39, 40, 41, 42, 43, 43, 44, 45...
[ "nonn", "easy" ]
A390581
[ 0, 3, 5, 22, 60, 190, 552, 1625, 4683, 13430, 38170, 107868, 303120, 847887, 2361905, 6555670, 18137112, 50034010, 137667768, 377899685, 1035119415, 2829792758, 7722173110, 21038135352, 57228544800, 155455026075, 421722802397, 1142664661270, 3092538752628, 8...
[ "nonn", "easy", "new" ]
A333786
[ 1, 2, 3, 5, 6, 7, 11, 13, 14, 15, 23, 21, 29, 30, 31, 47, 33, 35, 61, 62, 75, 65, 66, 67, 71, 69, 93, 91, 131, 77, 134, 142, 133, 105, 139, 143, 141, 265, 154, 195, 366, 201, 266, 210, 161, 209, 213, 215, 355, 217, 3...
[ "nonn" ]
A107462
[ 1, 4, 13, 16, 52, 64, 169, 208, 256, 676, 832, 1024, 2197, 2704, 3328, 4096, 8788, 10816, 13312, 16384, 28561, 35152, 43264, 53248, 65536, 114244, 140608, 173056, 212992, 262144, 371293, 456976, 562432, 692224, 851968, 1048576, 1485172 ]
[ "nonn", "easy" ]
A290310
[ 1, 1, 3, 2, 1, 8, 19, 18, 6, 1, 15, 69, 147, 162, 90, 20, 1, 24, 176, 624, 1251, 1500, 1070, 420, 70, 1, 35, 370, 1920, 5835, 11253, 14240, 11830, 6230, 1890, 252, 1, 48, 687, 4850, 20385, 55908, 104959, 137886, 127050, 80640,...
[ "nonn", "tabf", "easy" ]
A154122
[ 0, 1, 2, 3, 5, 4, 6, 7, 8, 12, 13, 9, 10, 11, 15, 14, 16, 17, 18, 19, 20, 21, 22, 31, 32, 34, 35, 36, 23, 24, 25, 26, 27, 28, 29, 30, 33, 40, 41, 37, 38, 39, 43, 42, 44, 45, 46, 47, 48, 49, 50, 52, 51, 53, 54...
[ "nonn" ]
A228434
[ 2, 7, 11, 23, 127, 167, 137, 269, 547, 547, 383, 547, 269, 431, 547, 547, 293, 383, 431, 1171, 1039, 1171, 641, 1039, 1103, 1171, 887, 1361, 2551, 1861, 3001, 2753, 1193, 2963, 1499, 2153, 2753, 2551, 2963, 4327, 5281, 1823, 2963, ...
[ "nonn" ]
A047679
[ 1, 2, 1, 3, 3, 2, 1, 4, 5, 5, 4, 3, 3, 2, 1, 5, 7, 8, 7, 7, 8, 7, 5, 4, 5, 5, 4, 3, 3, 2, 1, 6, 9, 11, 10, 11, 13, 12, 9, 9, 12, 13, 11, 10, 11, 9, 6, 5, 7, 8, 7, 7, 8, 7, 5, 4, 5, 5, 4, 3, 3, 2...
[ "nonn", "easy", "frac", "nice", "tabf", "look" ]
A043017
[ 3, 24, 150, 157, 164, 171, 178, 185, 192, 1032, 1088, 1144, 1200, 1256, 1312, 1368, 7206, 7255, 7304, 7353, 7402, 7451, 7500, 7556, 7605, 7654, 7703, 7752, 7801, 7850, 7906, 7955, 8004, 8053, 8102, 8151, 8200, 8256, 8305 ]
[ "nonn", "base" ]
A205207
[ 81, 3248, 357812, 155765726, 209120030041, 1034393632508251, 14824580873279400000, 7.975263230557876e+23, 1.2397275150668459e+29, 7.068433995780275e+34 ]
[ "nonn" ]
A036827
[ 0, 2, 34, 250, 1274, 5274, 19098, 63002, 194074, 567322, 1591322, 4317210, 11395098, 29392922, 74350618, 184942618, 453378074, 1097334810, 2626158618, 6222250010, 14610858010, 34032582682, 78693531674, 180757725210, 412685959194 ]
[ "nonn", "easy" ]
A285089
[ 1, 4, 2, 9, 6, 3, 16, 12, 8, 10, 25, 20, 15, 18, 5, 36, 30, 24, 28, 21, 14, 49, 42, 35, 40, 32, 50, 7, 64, 56, 48, 54, 45, 66, 27, 44, 81, 72, 63, 70, 60, 84, 55, 78, 33, 100, 90, 80, 88, 77, 104, 91, 98, 65, ...
[ "nonn", "tabl", "easy" ]
A344409
[ 148, 229, 257, 316, 321, 404, 469, 473, 564, 568, 592, 621, 733, 756, 761, 788, 837, 892, 916, 993, 1016, 1028, 1076, 1101, 1229, 1257, 1264, 1284, 1304, 1332, 1373, 1396, 1436, 1489, 1492, 1509, 1524, 1556, 1573, 1593, 1616, 1620, ...
[ "nonn" ]
A240188
[ 1, 8, 37, 138, 680, 2413, 10017, 43956, 159668, 681760, 2806434, 10675575, 45462460, 181764269, 715963401, 3000804172, 11895218236, 47847647772, 197325296591, 783759057127, 3182984036915, 12972975259195, 51820141213238 ]
[ "nonn" ]
A051377
[ 1, 2, 3, 6, 5, 6, 7, 10, 12, 10, 11, 18, 13, 14, 15, 22, 17, 24, 19, 30, 21, 22, 23, 30, 30, 26, 30, 42, 29, 30, 31, 34, 33, 34, 35, 72, 37, 38, 39, 50, 41, 42, 43, 66, 60, 46, 47, 66, 56, 60, 51, 78, 53, 60, ...
[ "nonn", "easy", "nice", "mult", "changed" ]
A049838
[ 2, 6, 10, 13, 19, 23, 30, 35, 40, 44, 54, 54, 65, 71, 75, 81, 91, 94, 103, 105, 110, 124, 134, 129, 138, 153, 156, 162, 174, 168, 188, 191, 199, 210, 209, 206, 232, 245, 244, 239, 259, 259, 280, 280, 279, 304, 315, 298, ...
[ "nonn" ]
A322845
[ 1, 3, 2, 8, 5, 9, 4, 6, 7, 12, 10, 13, 33, 34, 43, 24, 22, 45, 23, 44, 38, 29, 17, 50, 18, 28, 39, 46, 21, 25, 42, 26, 20, 47, 30, 16, 51, 31, 15, 52, 49, 19, 27, 40, 37, 48, 53, 14, 32, 35, 11, 56, 54, 55, 6...
[ "nonn", "base", "look" ]
A109734
[ 1, 2, 5, 3, 30, 6, 28, 4, 38, 26, 11, 7, 36, 29, 14, 8, 201, 39, 34, 27, 180, 12, 175, 9, 199, 37, 46, 31, 25, 15, 178, 10, 242, 202, 49, 40, 197, 35, 54, 32, 192, 158, 23, 13, 208, 176, 57, 16, 240, 200, 61, 41, ...
[ "nonn" ]
A291026
[ 4, 23, 128, 711, 3948, 21920, 121700, 675673, 3751296, 20826953, 115629868, 641969344, 3564171060, 19788040311, 109861881472, 609945846247, 3386378699324, 18800948912352, 104381615697460, 579519775642745, 3217455182279552, 17863096800262568 ]
[ "nonn", "easy" ]
A337810
[ 1, 3, 5, 7, 9, 13, 15, 17, 19, 25, 26, 27, 31, 33, 34, 35, 37, 38, 41, 45, 46, 49, 51, 57, 59, 61, 62, 65, 67, 69, 77, 78, 81, 83, 85, 89, 91, 93, 97, 98, 99, 103, 107, 109, 111, 118, 122, 123, 125, 127, 129, 130, ...
[ "nonn" ]
A086654
[ 1, 5, 4, 9, 20, 14, 40, 28, 434, 10, 1337, 354, 5370, 6180, 179472 ]
[ "nonn", "base", "hard", "more" ]
A186510
[ 9, 90, 819, 7461, 67968, 619902, 5660208, 51746211, 473692869, 4342348692, 39865757616, 366573510504, 3376339346538, 31152497957100, 287964157783869, 2666972253081303, 24749535734382636, 230152606404800000, 2144836146346691600, 20032155489077133000, 187516277719282300000, 1...
[ "base", "nonn" ]
A215607
[ 251, 1741, 3301, 3631, 4051, 5101, 5281, 5381, 5531, 6311, 6361, 6841, 8641, 9901, 10861, 11491, 12451, 12541, 12641, 13451, 13591, 14741, 14891, 15791, 15901, 16481, 17471, 18211, 19471, 22441, 22811, 23321, 23761, 24391, 26171, 26371, 28921, ...
[ "nonn" ]
A216445
[ 0, 0, 1, 2, 1, 14, 25, 69, 241, 251, 2481, 6830, 4921, 119547, 250489, 780584, 8507745, 5562314, 2246113, 592853256, 853522921, 1510777190, 67329163881, 131984971712, 1849868497489, 132447220974, 29144172315025, 92977949123774, 608057424846873, 1214694444952...
[ "nonn" ]
A176132
[ 41, 69257, 98909, 185681, 413069, 626009, 741467, 1064951, 1096829, 1107791, 1149917, 1582811, 1819271, 1823051, 2202311, 2221379, 2748059, 3177257, 3606287, 3958457, 4275809, 4786697, 5129039, 5903897, 6533981, 6541079 ]
[ "nonn" ]
A034094
[ 1, 20, 312, 9744, 29280, 53352, 1666224, 5006880, 106798080, 133301760, 980733600, 9099742080, 18262471680, 22794600960, 1556055895680, 3577201689600, 4464942451200, 3.804287738548968e+35 ]
[ "nonn", "more" ]
A233299
[ 22, 105, 567, 3556, 21856, 135636, 836259, 5134856, 31326263, 190404404, 1153108628, 6966626079, 42004555617, 252889763684 ]
[ "nonn" ]
A034847
[ 29, 53, 101, 109, 149, 173, 181, 197, 229, 269, 293, 317, 337, 349, 373, 389, 461, 509, 557, 569, 641, 653, 677, 701, 709, 773, 797, 821, 829, 853, 937, 941, 1013, 1021, 1033, 1061, 1069, 1109, 1117, 1181, 1193, 1217, 1229, 1277, ...
[ "nonn" ]
A192600
[ 0, 1, 10, 126, 3177, 158063, 15473373, 2981756709, 1131238674765, 844937235946975, 1242458005388315100, 3.596882436029101e+21, 2.050019768537536e+25, 2.3002610849528415e+29 ]
[ "nonn" ]
A151600
[ 0, 11640, 10421120, 2396959400, 324776205024, 34107115135800 ]
[ "nonn" ]
A155412
[ 1, 7, 19, 37, 67, 231, 1339, 8869, 45413, 237925, 1625066, 15388021, 179623547, 2180692829, 28227148274, 428766984919 ]
[ "nonn" ]
A343496
[ 5, 31, 194, 1061, 6456, 40080, 251721, 1617206, 10553419, 69709769, 465769825 ]
[ "nonn", "more" ]
A385794
[ 7, 47, 67, 467, 647, 677, 4447, 7477, 44647, 44777, 46447, 46477, 46747, 47777, 64667, 64747, 66467, 67447, 67477, 67777, 74747, 76667, 76777, 77447, 77477, 77647, 77747, 444677, 444767, 446447, 446477, 446647, 446767, 447467, 447677, 464447, 4...
[ "nonn", "base", "easy" ]
A162007
[ 1, 270, 36096, 4766048, 704357760, 120536980224, 24060789342208, 5590122715250688, 1503080384197755000, 464520829174515600000, 1.6383920441111778e+23, 6.550084934329425e+25 ]
[ "easy", "nonn" ]
A296405
[ 1, 1, 1, 1, 4, 1, 1, 8, 8, 1, 1, 17, 24, 17, 1, 1, 46, 82, 82, 46, 1, 1, 114, 316, 444, 316, 114, 1, 1, 289, 1182, 2868, 2868, 1182, 289, 1, 1, 757, 4560, 17783, 35561, 17783, 4560, 757, 1, 1, 1964, 17508, 110554, 3687...
[ "nonn", "tabl" ]
A370785
[ 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 216, 225, 256, 289, 324, 361, 400, 441, 484, 529, 576, 625, 676, 729, 784, 841, 864, 900, 961, 1000, 1024, 1089, 1156, 1225, 1296, 1369, 1444, 1521, 1600, 1681, 1764, 1...
[ "nonn", "easy" ]
A112745
[ 3, 2, 1, 3, 1, 2, 2, 5, 4, 2, 3, 8, 2, 2, 4, 7, 1, 8, 3, 2, 2, 1, 13, 1, 2, 10, 5, 3, 1, 4, 2, 1, 9, 3, 5, 2, 14, 3, 9, 3, 3, 10, 1, 5, 4, 1, 2, 2, 2, 6, 3, 2, 1, 10, 5, 7, 1, 3, 10, 6, 2, 7, ...
[ "nonn" ]
A146396
[ 1, 1, 1, 1, 9, 21, 85, 433, 2775, 20277, 189267, 2151189, 36658025, 657296273, 17789206817 ]
[ "nonn" ]
A081581
[ 1, 1, 1, 1, 8, 1, 1, 15, 15, 1, 1, 22, 78, 22, 1, 1, 29, 190, 190, 29, 1, 1, 36, 351, 848, 351, 36, 1, 1, 43, 561, 2339, 2339, 561, 43, 1, 1, 50, 820, 5006, 9766, 5006, 820, 50, 1, 1, 57, 1128, 9192, 28806, 28806, ...
[ "easy", "nonn", "tabl" ]
A176160
[ 1, 5, 5, 25, 81, 25, 125, 2197, 2197, 125, 625, 83521, 390625, 83521, 625, 3125, 4084101, 115856201, 115856201, 4084101, 3125, 15625, 244140625, 51520374361, 282429536481, 51520374361, 244140625, 15625, 78125, 17249876309 ]
[ "nonn", "tabl", "uned" ]
A169999
[ 0, 1, 1, 9, 16, 13, 9, 13, 16, 81, 100, 91, 144, 142, 157, 117, 112, 133, 81, 91, 100, 117, 133, 112, 144, 157, 142, 729, 784, 757, 900, 961, 931, 819, 877, 853, 1296, 1369, 1333, 1278, 1249, 1237, 1413, 1381, 1456, 1053, 11...
[ "nonn", "base", "look" ]
A294061
[ 0, 0, 1, 2, 1, 4, 8, 12, 9, 6, 13, 20, 17, 26, 36, 46, 41, 52, 46, 58, 52, 66, 81, 96, 88, 80, 98, 90, 83, 104, 126, 148, 139, 162, 186, 210, 199, 224, 250, 276, 263, 290, 318, 346, 332, 318, 350, 382, 367, 352, 337,...
[ "nonn", "easy" ]
A087947
[ 1, 4, 5, 6, 8, 9, 16, 17, 18, 20, 24, 25, 36, 37, 38, 39, 40, 42, 48, 49, 64, 65, 66, 68, 72, 78, 80, 81, 100, 101, 102, 104, 105, 110, 117, 120, 121, 144, 145, 146, 147, 148, 150, 152, 155, 156, 164, 168, 169, 196, ...
[ "nonn" ]
A066378
[ 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 18, 20, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144, 148, 150, 155, 160, ...
[ "nonn" ]
A041845
[ 1, 14, 589, 8260, 347509, 4873386, 205029721, 2875289480, 120967187881, 1696415919814, 71370435820069, 1000882517400780, 42108436166652830, 590518988850540400, 24843905967889350000, 348405202539301440000, 1.465786241261855e+22, 2.0555847897919898e+23 ]
[ "nonn", "frac", "easy" ]
A045362
[ 2, 5, 11, 19, 23, 29, 37, 43, 47, 53, 61, 67, 71, 79, 89, 103, 107, 109, 113, 127, 131, 137, 149, 151, 163, 173, 179, 191, 193, 197, 211, 229, 233, 239, 257, 263, 271, 277, 281, 313, 317, 331, 337, 347, 359, 373 ]
[ "nonn", "easy" ]
A260605
[ 241, 532, 1334, 3388, 8736, 22944, 59758, 156228, 410004, 1074706, 2810634, 7356614, 19275408, 50484816, 132179260, 346084882, 906235472, 2373216196, 6214897284, 16273805984, 42611987122, 111584761940, 292206789126 ]
[ "nonn" ]
A193107
[ 11, 26, 40, 54, 69 ]
[ "nonn", "more" ]
A100152
[ 1, 24, 100, 260, 535, 956, 1554, 2360, 3405, 4720, 6336, 8284, 10595, 13300, 16430, 20016, 24089, 28680, 33820, 39540, 45871, 52844, 60490, 68840, 77925, 87776, 98424, 109900, 122235, 135460, 149606, 164704 ]
[ "nonn", "easy" ]
A314793
[ 1, 5, 9, 13, 22, 22, 28, 36, 37, 45, 48, 52, 61, 62, 68, 73, 78, 83, 84, 97, 97, 99, 111, 109, 117, 124, 124, 133, 137, 139, 147, 153, 154, 159, 170, 168, 173, 185, 182, 191, 197, 196, 206, 211, 213, 219, 226, 227, 233, ...
[ "nonn" ]
A033540
[ 1, 2, 6, 21, 88, 445, 2676, 18739, 149920, 1349289, 13492900, 148421911, 1781062944, 23153818285, 324153456004, 4862301840075, 77796829441216, 1322546100500689, 23805829809012420, 452310766371236000, 9046215327424720000, 189970521875919100000 ]
[ "nonn", "easy" ]
A188332
[ 0, 8, 40, 257, 1534, 9314, 56314, 341988, 2082546, 12729304, 78083158, 480688451, 2969319278, 18402445258, 114405090020, 713334999381, 4460132045862, 27960102769656, 175711836643538, 1106809365488500, 6987092970919342 ]
[ "nonn" ]
A311791
[ 1, 4, 8, 13, 17, 21, 24, 29, 34, 39, 42, 46, 50, 54, 59, 64, 68, 70, 74, 79, 85, 89, 93, 96, 100, 105, 110, 114, 117, 121, 125, 130, 134, 139, 143, 147, 151, 156, 160, 163, 167, 172, 177, 180, 184, 188, 193, 198, 203, ...
[ "nonn" ]
A034734
[ 1, 3, 6, 13, 21, 48, 77, 163, 298, 593, 1113, 2268, 4329, 8659, 17046, 33949, 67133, 134076, 266325, 531763, 1059702, 2116065, 4222961, 8437812, 16852321, 33680387, 67305930, 134544781, 268949685, 537722088, 1075088093, 2149697251 ]
[ "nonn" ]
A059854
[ 4, 6, 2, 3, 6, 8, 10, 2, 4, 9, 4, 14, 2, 16, 6, 12, 12, 2, 16, 22, 10, 24, 2, 24, 12, 24, 16, 2, 6, 26, 30, 26, 2, 7, 20, 12, 18, 2, 18, 11, 20, 64, 2, 20, 30, 19, 22, 2, 40, 20, 10, 50, 2, 10, 38, 74, 14...
[ "nonn" ]
A290858
[ 1, 1, 1, 1, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3...
[ "nonn", "easy" ]
A233145
[ 452, 1158334, 3556749764, 10976545771938, 33888199682535540, 104628720219120090000, 3.230400505136448e+23, 9.973838032176054e+26, 3.0794157681203345e+30 ]
[ "nonn" ]
A033929
[ 1, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 9, 2, 3, 4, 5, 6, 7, 8, 9, 10, 3, 4, 5, 6, 7, 8, 9, 10, 11, 4, 5, 6, 7, 8, 9, 10, 11, 12, 5, 6, 7, 8, 9, 10, 11, 12, 13, 6, 7, 8, 9, 10, 11, 12, ...
[ "nonn", "base" ]
A346906
[ 1, 1, 1, 1, 3, 1, 1, 7, 3, 1, 1, 15, 9, 4, 1, 1, 31, 25, 10, 5, 1, 1, 63, 70, 35, 15, 6, 1, 1, 127, 196, 140, 35, 21, 7, 1, 1, 255, 553, 476, 175, 56, 28, 8, 1, 1, 511, 1569, 1624, 1071, 126, 84, 36, 9, 1, ...
[ "nonn", "tabl" ]
A276012
[ 0, 2, 3, 1, 12, 13, 16, 17, 14, 15, 8, 10, 11, 9, 4, 6, 7, 5, 72, 73, 76, 77, 74, 75, 90, 91, 94, 95, 92, 93, 84, 85, 88, 89, 86, 87, 78, 79, 82, 83, 80, 81, 54, 56, 57, 55, 66, 67, 70, 71, 68, 69, 62, 64, 65...
[ "nonn", "base" ]
A331747
[ 1, 1, 2, 1, 3, 4, 5, 1, 3, 6, 7, 8, 7, 9, 10, 1, 3, 11, 7, 6, 12, 13, 14, 15, 7, 13, 16, 17, 14, 18, 19, 1, 11, 6, 7, 3, 12, 13, 14, 20, 12, 21, 22, 23, 24, 25, 26, 8, 7, 7, 27, 13, 22, 28, 29, 30, 14, ...
[ "nonn" ]
A383571
[ 1, 0, 0, 1, 2, 0, 1, 6, 6, 1, 12, 30, 21, 20, 90, 141, 100, 210, 561, 672, 672, 1681, 3206, 3528, 5125, 11622, 17892, 21253, 38172, 74052, 102565, 141680, 268092, 454741, 622182, 979836, 1790361, 2784366, 3993132, 6741593, 11587758, 1...
[ "nonn" ]
A165344
[ 1, 20, 75456, 222049714176, 1.4468593086306976e+21, 4.76805300465933e+34, 1.5747911603441625e+52 ]
[ "nonn" ]
A075123
[ 1, 2, 3, 6, 9, 14, 17, 22, 25, 30, 33, 38, 41, 46, 49, 54, 57, 62, 65, 70, 73, 78, 81, 86, 89, 94, 97, 102, 105, 110, 113, 118, 121, 126, 129, 134, 137, 142, 145, 150, 153, 158, 161, 166, 169, 174, 177, 182, 185, 190, ...
[ "nonn", "easy" ]
A320742
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 1, 0, 0, 0, 0, 0, 0, 6, 13, 2, 0, 0, 0, 0, 0, 0, 6, 30, 46, 7, 0, 0, 0, 0, 0, 0, 6, 34, 13...
[ "nonn", "tabl", "easy" ]
A152505
[ 0, 3, 1008, 172573, 24118698, 3148308323, 401420959948, 50776368194073, 6405835208453198, 807454401764399900, 101751780468757350000, 1.2821210170324928e+22, 1.6154911454857597e+24, 2.0355259566963788e+26, 2.564765398463416e+28 ]
[ "nonn", "easy" ]
A238346
[ 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 5, 5, 4, 1, 1, 8, 9, 8, 5, 1, 1, 14, 15, 15, 12, 6, 1, 1, 24, 27, 27, 24, 17, 7, 1, 1, 43, 47, 50, 46, 37, 23, 8, 1, 1, 77, 85, 90, 89, 75, 55, 30, 9, 1, 1, 140, 153, 165, ...
[ "nonn", "tabl" ]
A316362
[ 30, 105, 110, 210, 238, 273, 330, 385, 390, 462, 506, 510, 546, 570, 627, 690, 714, 770, 806, 858, 870, 910, 930, 935, 966, 1001, 1110, 1131, 1155, 1190, 1230, 1254, 1290, 1326, 1330, 1365, 1394, 1410, 1430, 1482, 1495, 1518, 1590, ...
[ "nonn" ]
A107338
[ 1, 2, 1, 3, 2, 1, 3, 1, 2, 1, 3, 2, 1, 1, 3, 3, 1, 2, 1, 3, 2, 1, 1, 3, 1, 2, 1, 3, 2, 1, 3, 1, 2, 1, 3, 2, 1, 1, 3, 3, 1, 2, 1, 3, 2, 1, 1, 2, 1, 3, 2, 1, 1, 3, 1, 3, 1, 2, 1, 3, 2, 1, 3, 1...
[ "nonn", "uned" ]
A182641
[ 1, 1, 1, 1, 0, 0, 1, 1, 1, 2, 1, 0, 1, 1, 0, 1, 0, 2, 1, 0, 2, 1, 1, 1, 1, 0, 2, 0, 1, 0, 1, 0, 0, 2, 0, 2, 1, 1, 1, 0, 1, 2, 0, 2, 0, 1, 1, 1, 1, 1, 1, 0, 2, 0, 2, 1, 0, 0, 1, 1, 1, 0, 2, 0...
[ "nonn", "tabl" ]
A252558
[ 771, 1107, 747, 1510, 889, 832, 2443, 1752, 1477, 1265, 4284, 3178, 4006, 3084, 2162, 7755, 8508, 8329, 10585, 7144, 3761, 13917, 21797, 29158, 24336, 33635, 16327, 6855, 27182, 42359, 88899, 104515, 80820, 93997, 37430, 12549, 51187, 123304,...
[ "nonn", "tabl" ]
A097472
[ 1, 3, 10, 31, 96, 296, 912, 2809, 8651, 26642, 82047, 252672, 778128, 2396320, 7379697, 22726483, 69988378, 215535903, 663763424, 2044122936, 6295072048, 19386276329, 59701891739, 183857684514, 566207320575, 1743689586432 ]
[ "easy", "nice", "nonn" ]
A165157
[ 0, 1, 3, 4, 7, 8, 12, 13, 18, 19, 25, 26, 33, 34, 42, 43, 52, 53, 63, 64, 75, 76, 88, 89, 102, 103, 117, 118, 133, 134, 150, 151, 168, 169, 187, 188, 207, 208, 228, 229, 250, 251, 273, 274, 297, 298, 322, 323, 348, 349...
[ "nonn", "easy" ]
A154570
[ 1, 3, -4, 2, -6, -2, -14, -18, -46, -82, -174, -338, -686, -1362, -2734, -5458, -10926, -21842, -43694, -87378, -174766, -349522, -699054, -1398098, -2796206, -5592402, -11184814, -22369618, -44739246, -89478482, -178956974, -357913938, -715827886 ]
[ "sign" ]
A195992
[ 9, 11, 73, 29, 13, 47, 17, 79, 51, 353, 99, 39, 121, 33, 211, 429, 221, 103, 143, 709, 351, 83, 561, 109, 747, 213, 117, 799, 213, 701, 157, 221, 283, 87, 561, 81, 507, 573, 453, 313, 97, 431, 773, 599, 377, 141, 149, 187,...
[ "nonn" ]
A116345
[ 41, 54, 40354308, 59645687, 3.9704957106129738e+31, 4.450528160483242e+31, 4.505387561399525e+31, 5.4946124386004745e+31, 5.549471839516758e+31, 6.029504289387026e+31, 6.868365291730642e+31 ]
[ "nonn", "base" ]
A182739
[ 2, 1, 4, 8, 41, 45, 196, 193, 765, 3310, 2277, 14795, 22946, 18678, 61493, 205177, 501889, 289685, 1558184, 2017516, 1488484, 7662961, 9489819, 26657456, 83235005, 81250196, 56767824, 159900439, 110796851, 309430388, 3062487667, 2050675209, 5133105512 ...
[ "nonn" ]
A090963
[ 1, 3, 6, 4, 6, 6, 8, 8, 10, 10, 12, 12, 14, 14, 16, 14, 18, 18, 20, 20, 22, 22, 24, 24, 26, 26, 25, 27, 30, 30, 32, 30, 81, 77, 84, 78, 112, 196, 196, 172, 288, 258, 258, 228, 216, 204, 330, 294, 280, 260, 274, 246...
[ "nonn" ]
A287458
[ 3, 4, 7, 10, 15, 16, 19, 22, 27, 28, 31, 36, 39, 40, 43, 46, 51, 52, 55, 58, 63, 64, 69, 70, 75, 76, 79, 82, 85, 90, 91, 96, 97, 102, 103, 106, 111, 112, 115, 118, 123, 124, 127, 130, 135, 136, 139, 144, 147, 148, 15...
[ "nonn", "easy" ]
A389868
[ 1, 1, 4, 36, 420, 5940, 101640, 2062200, 48439440, 1293077520, 38688481440, 1283065993440, 46733081250240, 1854990586088640, 79714668324170880, 3687664620483043300, 182743008543641140000, 9.65893696489891e+21, 5.4244833342844856e+23 ]
[ "nonn" ]
A203883
[ 1399489, 222645367, 39572771665, 7265109130279, 1337957259758497, 247090069595954270, 45601045546133880000, 8.420752441494326e+21, 1.5545153297912722e+24, 2.8702498630039486e+26 ]
[ "nonn" ]
A058463
[ 2, 88, 688, 8564136525847038, 21150351639576464, 20913496712251030000, 1.8648789168300832e+21, 2.7100615006572226e+26 ]
[ "nonn", "base", "hard", "more" ]
A263807
[ 1, 3, 6, 11, 17, 25, 34, 45, 57, 71, 86, 103, 121, 141, 162, 185, 209, 235, 262, 291, 321, 353, 386, 421, 457, 495, 534, 575, 617, 661, 706, 753, 801, 851, 902, 955, 1009, 1065, 1122, 1181, 1241, 1303, 1366, 1431, 1497, 1565, ...
[ "nonn", "easy" ]
A298474
[ 1, 2, 6, 8, 11, 14, 18, 20, 24, 26, 30, 32, 36, 38, 42, 44, 48, 50, 54, 56, 60, 62, 66, 68, 72, 74, 78, 80, 84, 86, 90, 92, 96, 98, 102, 104, 108, 110, 114, 116, 120, 122, 126, 128, 132, 134, 138, 140, 144, 146, 150,...
[ "nonn" ]
A240908
[ 0, 7, 3, 4, 1, 6, 2, 5 ]
[ "nonn", "fini", "full" ]
A356771
[ 0, 1, 2, 0, 4, 0, 1, 7, 0, 1, 2, 3, 12, 0, 1, 2, 0, 4, 5, 6, 20, 0, 1, 2, 3, 4, 0, 1, 7, 8, 9, 10, 11, 33, 0, 1, 2, 0, 4, 5, 6, 7, 0, 1, 2, 3, 12, 13, 14, 15, 13, 17, 18, 19, 54, 0, 1, 2, 3, 4, 0,...
[ "nonn", "base", "look" ]
A154418
[ 19, 31, 41, 71, 79, 109, 131, 149, 151, 181, 191, 241, 251, 379, 409, 421, 499, 509, 541, 599, 631, 659, 709, 719, 769, 919, 1009, 1019, 1021, 1031, 1109, 1129, 1151, 1201, 1231, 1291, 1399, 1409, 1451, 1549, 1601, 1621, 1721, 187...
[ "nonn", "easy" ]
A094703
[ 1, 11, 109, 1103, 11113, 112067, 1129909, 11392679, 114869521, 1158202427, 11677879357, 117745285823, 1187197753081, 11970233026931, 120693017030149, 1216919029806743, 12269905596087072, 123714544394638190, 1247384372674934000, 12577080413686874000 ]
[ "nonn", "easy" ]
A323082
[ 1, 2, 3, 4, 3, 5, 3, 4, 6, 7, 3, 8, 3, 9, 10, 11, 3, 6, 3, 12, 13, 14, 3, 8, 15, 16, 17, 18, 3, 10, 3, 11, 19, 20, 21, 22, 3, 23, 24, 12, 3, 13, 3, 25, 26, 27, 3, 28, 29, 15, 30, 31, 3, 17, 32, 18, 33, ...
[ "nonn" ]
A240930
[ 0, 0, 64, 1458, 12288, 62500, 233280, 705894, 1835008, 4251528, 9000000, 17715610, 32845824, 57921708, 97883968, 159468750, 251658240, 386201104, 578207808, 846825858, 1216000000, 1715322420, 2380977984, 3256789558, 4395368448, 5859375000, 7722894400, 1007293271...
[ "nonn", "easy" ]
A065569
[ 2, 2, 2, 3, 2, 2, 2, 3, 2, 3, 2, 4, 3, 2, 2, 3, 2, 5, 4, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 2, 14, 5, 4, 3, 2, 5, 4, 3, 2, 3, 2, 5, 4, 3, 2, 3, 2, 5, 4, 3, 2, 6, 8, 5, 4, 3, 2, 3, 2, 4, 3, 2, 4, ...
[ "nonn" ]
A198787
[ 0, 0, 1, 0, 2, 3, 0, 4, 5, 6, 0, 6, 8, 9, 10, 0, 9, 12, 13, 14, 15, 0, 12, 16, 18, 19, 20, 21, 0, 16, 21, 24, 25, 26, 27, 28, 0, 20, 27, 30, 32, 33, 34, 35, 36, 0, 25, 33, 37, 40, 41, 42, 43, 44, 45, 0, 3...
[ "tabl", "easy", "nonn" ]
A111613
[ 9, 9, 9, 3, 9, 0, 9, 1, 9, 7, 9, 2, 0, 2, 5, 8, 9, 5, 9, 5, 4, 7, 6, 7, 0, 5, 5, 1, 0, 2, 4, 9, 6, 8, 6, 0, 5, 4, 3, 7, 9, 0, 3, 6, 0, 8, 8, 3, 0, 2, 6, 0, 7, 8, 5, 8, 0, 1, 9, 9, 6, 5, 5, 1...
[ "nonn", "cons" ]
A284279
[ 276, 306, 396, 564, 660, 696, 780, 828, 888, 966, 996, 1074, 1086, 1098 ]
[ "nonn", "more" ]
A206444
[ 13, 53, 213, 853, 3413, 13653, 54613, 218453, 873813, 3495253 ]
[ "nonn" ]