id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A215900
[ 2, 2, 15, 42, 726, 2906, 84550, 433252, 18378580, 113503692, 6485270720, 46538017584, 3404551437592, 27700815674032, 2504332323669064, 22702140562948190, 2470653950084307500, 24626774613248940000 ]
[ "nonn" ]
A336166
[ 0, 1, -3, 4, 9, -12, 16, 25, -27, -35, 36, 37, -48, 49, -59, 64, -75, 81, 100, -108, 121, 144, -147, -159, 169, 172, -192, 196, 225, -227, -243, -255, 256, 261, -287, 289, -300, -311, 324, -335, 361, -363, 373, 400, -432, 441,...
[ "sign" ]
A076056
[ 19, 23, 29, 41, 43, 47, 53, 59, 61, 67, 83, 89, 103, 109, 127, 137, 139, 163, 173, 193, 197, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 317, 331, 349, 367, 379, 397, 401, 409, 419, ...
[ "base", "nonn" ]
A129380
[ 1, 3, 6, 12, 48, 336, 3696, 59136, 1300992, 37728768, 1395964416, 64214363136, 3596004335616, 240932290486272, 19033650948415490, 1751095887254225000, 185616164048947840000, 2.2459555849922687e+22 ]
[ "nonn" ]
A256252
[ 4, 1, 2, 1, 2, 1, 1, 2, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1, 1, 2, 2, 1, 1, 1, 2, 1, 3, 1, 1, 2, 1, 2, 1, 1, 6, 1, 1, 1, 2, 2, 4, 2, 2, 1, 2, 1, 1, 1, 2, 1, 2, 2, 4, 2, 1, 2, 5, 1, 5, 1, 1...
[ "nonn" ]
A224411
[ 16, 108, 358, 884, 1928, 3902, 7490, 13784, 24467, 42053, 70195, 114073, 180875, 280385, 425693, 634043, 927836, 1335806, 1894388, 2649298, 3657346, 4988504, 6728252, 8980226, 11869193, 15544379, 20183177, 25995263, 33227149, 42167203 ]
[ "nonn" ]
A086649
[ 243, 78125, 34522712143931, 2.3907243568515132e+23, 2.1594240548085784e+45, 2.237205297093589e+69 ]
[ "nonn" ]
A088364
[ 1, 3, 6, 9, 13, 16, 19, 21, 26, 28, 30, 33, 37, 39, 43, 48, 50, 53, 56, 61, 63, 66, 68, 70, 73, 75, 78, 80, 82, 86, 90, 94, 96, 98, 102, 105, 108, 112, 115, 119, 124, 128, 132, 134, 136, 139, 141, 144, 146, 148, 150,...
[ "nonn" ]
A349932
[ 0, 2, 0, 12, 10, 6, 0, 56, 54, 50, 44, 36, 26, 14, 0, 240, 238, 234, 228, 220, 210, 198, 184, 168, 150, 130, 108, 84, 58, 30, 0, 992, 990, 986, 980, 972, 962, 950, 936, 920, 902, 882, 860, 836, 810, 782, 752, 720, 686, ...
[ "nonn", "base", "easy" ]
A300500
[ 2, 3, 2, 3, 6, 6, 11, 26, 43, 82, 178, 347, 682, 1403, 2822, 5638, 11411, 23026, 46291, 93346, 188258, 379187, 764178, 1540467, 3104262, 6255878, 12608667, 25410698, 51210491, 103208946, 208003346, 419198091, 844835898, 1702649067, 3431439878 ]
[ "nonn" ]
A355434
[ 1, 8, 48, 1518, 5828, 28032, 304260, 290783, 1255500, 4325170, 11135837, 18567909, 321903029, 1394350275, 287946949, 1659945758, 38882519234 ]
[ "nonn", "more" ]
A273975
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 2, 1, 1, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 3, 2, 1, 1, 3, 6, 7, 6, 3, 1, 1, 4, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1...
[ "nonn", "tabf", "easy" ]
A053415
[ 0, 0, 4, 4, 12, 16, 32, 32, 52, 60, 80, 88, 112, 124, 156, 172, 208, 216, 256, 276, 316, 332, 384, 408, 448, 484, 540, 560, 616, 648, 716, 740, 812, 848, 912, 952, 1020, 1060, 1124, 1184, 1264, 1304, 1396, 1436, 1528, 1576, ...
[ "easy", "nonn" ]
A303008
[ 2, 126217792286, 600030498926, 1248599869826, 226537279412126, 7615111129051346, 9609149773927166, 17502271515299726, 20140666152370224, 126921319513852050, 133564589570047410, 141572739574418850, 185615640867777500, 193420934175277150 ]
[ "nonn", "hard" ]
A320681
[ 0, 1, 7, 20, 51, 117, 239, 430, 724, 1163, 1834, 2823, 4252, 6226, 8870, 12299, 16712, 22340, 29524, 38606, 49979, 63965, 80946, 101250, 125316, 153592, 186694, 225268, 270172, 322285, 382716, 452614, 533380, 626424, 733387, 855881, 995740, 1...
[ "nonn" ]
A355990
[ 1, 4, 20, 60, 420, 3360, 10080, 100800, 1108800, 3326400, 43243200, 605404800, 1816214400, 29059430400, 494010316800, 1482030950400, 28158588057600, 563171761152000, 1689515283456000, 37169336236032000, 854894733428736000, 2564684200286208000 ]
[ "nonn", "easy" ]
A217141
[ 143, 157, 203, 247, 273, 1147, 1209, 1679, 2147, 2279, 2375, 2445, 2705, 2747, 4331, 4687, 5049, 6107, 7367, 7835, 7869, 7979, 7991, 9167, 12127, 17145, 18501, 18753, 18981, 19803, 22987, 26733, 27359, 29097, 29987, 32829, 35485, 35763, 376...
[ "nonn" ]
A185370
[ 1, 1, 1, 2, 0, 1, 0, 1, 3, 1, 0, 1, 0, 0, 1, 5, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 7, 2, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 11, 2, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, ...
[ "nonn", "tabf" ]
A273475
[ 0, 1, 2, 3, 4, 5, 6, 7, 70, 71, 8, 72, 9, 17, 10, 11, 73, 12, 13, 74, 14, 15, 27, 16, 18, 19, 37, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 49, 50...
[ "nonn", "base" ]
A241528
[ 17, 23, 37, 59, 131, 139, 157, 199, 241, 311, 353, 359, 397, 433, 479, 547, 673, 691, 769, 877, 937, 947, 953, 1051, 1091, 1097, 1181, 1297, 1301, 1409, 1451, 1471, 1489, 1531, 1609, 1619, 1697, 1709, 1861, 1879, 1889, 1913, 1951, ...
[ "nonn" ]
A025752
[ 1, 1, 21, 637, 22295, 842751, 33429123, 1370594043, 57564949806, 2462500630590, 106872527367606, 4692675519868518, 208041948047504300, 9297874755046154000, 418404363977076900000, 1.8939770876029013e+22, 8.617595748593202e+23, 3.938748174504069e+25 ]
[ "nonn", "easy" ]
A308349
[ 0, 0, 0, 1, 1, 1, 3, 13, 55 ]
[ "nonn", "hard", "more" ]
A223259
[ 125, 10985, 988625, 89405945, 8093320565, 732779276465, 66349405785905, 6007647236699705, 543966961228880260, 49253916167787710000, 4.459734862897445e+21, 4.03810232078942e+23 ]
[ "nonn" ]
A154141
[ 1, 7, 16, 46, 97, 271, 568, 1582, 3313, 9223, 19312, 53758, 112561, 313327, 656056, 1826206, 3823777, 10643911, 22286608, 62037262, 129895873, 361579663, 757088632, 2107440718, 4412635921, 12283064647, 25718726896, 71590947166, 149899725457, 417262618351 ]
[ "nonn" ]
A106156
[ 314, 1, 5926, 5, 35897, 932384626, 43, 383279, 50288, 419, 71693, 99375105, 820974944, 5923078, 1.640628620899863e+92 ]
[ "base", "easy", "nonn" ]
A249116
[ 1, 32, 64, 729, 2048, 4096, 15625, 23328, 46656, 117649, 131072, 262144, 500000, 531441, 1000000, 1492992, 1771561, 2985984, 3764768, 4826809, 7529536, 8388608, 11390625, 16777216, 17006112, 24137569, 32000000, 34012224, 47045881, 56689952, 64000000 ]
[ "nonn", "easy" ]
A173587
[ 3, 17, 29, 43, 127, 179, 251, 277, 359, 397, 433, 557, 593, 811, 857, 1051, 1367, 1459, 1583, 1753, 1801, 2017, 2027, 2213, 2251, 2447, 2663, 2689, 2729, 2789, 3221, 3331, 3391, 3457, 3581, 4421, 4519, 4787, 4967, 5653, 6037, 6217, ...
[ "nonn" ]
A276648
[ 1, 9, 59, 169, 339, 701, 1243, 1893, 2741, 3943, 5577, 7343, 9409, 12039, 15065, 18421, 22227, 26717, 31879, 37461, 43655, 50557, 58071, 66227, 75121, 85083, 95801, 107227, 119541, 133019, 147271, 161901, 178127, 195481, 214143 ]
[ "nonn" ]
A090418
[ 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 2, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 3, 0, 0, 0, 0, 0, 2, 1, 3, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 3, 0, 2, 2, 4, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 3, 0, 3, 1, 2...
[ "nonn", "base" ]
A175133
[ 3, 5, 217, 1065, 93448, 39545957, 240439822, 1894541497, 132563927578, 309101198255 ]
[ "nonn", "more" ]
A264527
[ 1, 1, 5, 7, 7, 9, 13, 13, 17, 19, 19, 21, 25, 23, 29, 27, 31, 35, 33, 37, 39, 43, 41, 47, 49, 49, 53, 55, 53, 51, 45, 61, 63, 67, 67, 63, 73, 73, 77, 75, 79, 81, 85, 83, 89, 87, 85, 95, 97, 97, 93, 93, 103, 87,...
[ "nonn" ]
A180601
[ 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, 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, 1, 0, 1, 0...
[ "nonn", "base" ]
A310121
[ 1, 3, 6, 11, 18, 24, 28, 30, 33, 36, 39, 42, 50, 60, 66, 67, 66, 69, 72, 75, 78, 89, 102, 108, 106, 102, 105, 108, 111, 114, 128, 144, 150, 145, 138, 141, 144, 147, 150, 167, 186, 192, 184, 174, 177, 180, 183, 186, 206, ...
[ "nonn" ]
A302721
[ 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 2, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 1, 0, 0, 0, 0, 0, 0, 0...
[ "nonn", "tabl" ]
A255808
[ 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 55, 56, 57, 58, 59, 60, ...
[ "nonn", "base", "easy" ]
A014049
[ 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, ...
[ "sign", "easy" ]
A362417
[ 1, 3, 5, 7, 20, 11, 9, 13, 15, 19, 50, 111, 30, 113, 51, 31, 35, 37, 53, 57, 59, 70, 115, 73, 75, 91, 95, 97, 201, 119, 120, 130, 131, 135, 137, 301, 150, 151, 153, 157, 311, 159, 191, 195, 197, 313, 501, 315, 319, 511...
[ "base", "nonn" ]
A229302
[ 1, 2, 3, 4, 5, 6, 8, 9, 11, 12, 13, 15, 16, 17, 18, 19, 22, 23, 24, 25, 27, 29, 31, 32, 33, 34, 36, 37, 38, 39, 41, 43, 44, 45, 46, 47, 48, 51, 53, 54, 58, 59, 61, 62, 64, 65, 66, 67, 68, 69, 71, 72, 73, 74, ...
[ "nonn" ]
A130055
[ 1, 0, 2, -1, 0, 3, -1, 0, 0, 4, -3, 0, 0, 0, 5, 0, -2, 0, 0, 0, 6, -5, 0, 0, 0, 0, 0, 7, -2, -2, 0, 0, 0, 0, 0, 8, -3, 0, -3, 0, 0, 0, 0, 0, 9, 0, -6, 0, 0, 0, 0, 0, 0, 0, 10 ]
[ "tabl", "sign" ]
A343256
[ 0, 1, 2, 6, 8, 22, 32, 66, 118, 204, 366, 644, 1120, 1902, 3300, 5676, 9690, 16620, 28152, 47900, 80856, 136546, 230754, 387570, 651932, 1093174, 1832286, 3065822, 5122932, 8557788, 14272702, 23779968, 39592890, 65860910, 109471248, 181821502, ...
[ "nonn" ]
A158868
[ 1, 5, 2, 14, 7, 6, 126, 54, 54, 24, 594, 297, 264, 132, 120, 7722, 3432, 3432, 1560, 1560, 720, 51480, 25740, 23400, 11700, 10800, 5400, 5040, 875160, 397800, 397800, 183600, 183600, 85680, 85680, 40320, 7558200, 3779100, 3488400, 1744200...
[ "nonn", "tabl" ]
A037755
[ 2, 19, 153, 1224, 9794, 78355, 626841, 5014728, 40117826, 320942611, 2567540889, 20540327112, 164322616898, 1314580935187, 10516647481497, 84133179851976, 673065438815810, 5384523510526483 ]
[ "nonn", "base" ]
A084760
[ 2, 3, 5, 10, 13, 17, 23, 30, 38, 47, 57, 69, 82, 93, 107, 122, 138, 155, 173, 193, 214, 233, 255, 278, 302, 327, 353, 381, 410, 437, 467, 498, 530, 563, 597, 633, 670, 705, 743, 782, 822, 863, 905, 949, 994, 1037, 1085, 11...
[ "nonn" ]
A121784
[ 1, 11, 74, 390, 1801, 7537, 29684, 110796, 399375, 1391809, 4741466, 15783154, 51704949, 166550157, 530165200, 1666083296, 5188200085, 15993447527, 48946213794, 148574713674, 448343690109, 1343838723819, 4008314601988 ]
[ "nonn" ]
A171572
[ 0, 1, 2, 3, 4, 9, 9, 9, 9, 9, 14, 14, 14, 14, 14, 19, 19, 19, 19, 19, 24, 24, 24, 24, 24, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 74, 74, 74, 74, 74...
[ "nonn", "base" ]
A164542
[ 1, 16, 120, 832, 5696, 38912, 265728, 1814528, 12390400, 84606976, 577732608, 3945005056, 26938179584, 183945396224, 1256057733120, 8576898695168, 58566727696384, 399918632009728, 2730815234506752, 18647172819976190 ]
[ "nonn", "easy" ]
A200106
[ 1, 7, 6, 9, 5, 6, 8, 8, 7, 4, 3, 7, 2, 7, 0, 1, 7, 4, 9, 1, 1, 5, 0, 7, 8, 4, 6, 2, 0, 0, 1, 6, 2, 7, 7, 5, 4, 7, 6, 5, 5, 5, 3, 4, 1, 0, 5, 3, 8, 0, 6, 4, 0, 4, 0, 5, 3, 9, 9, 1, 8, 7, 9, 8...
[ "nonn", "cons" ]
A049037
[ 1, 6, 54, 996, 22734, 577692, 15680628, 445162392, 13055851998, 392475442092, 12029082873372, 374482032292008, 11808861461931492, 376406128925067500, 12108063535794336000, 392560994063887100000, 1.2814685828476777e+22, 4.208362674234332e+23 ]
[ "easy", "nonn", "nice" ]
A390372
[ 1, 3, 4, 1, 6, 12, 8, 11, 1, 18, 12, 4, 14, 24, 24, 11, 18, 3, 20, 6, 32, 36, 24, 44, 1, 42, 31, 8, 30, 72, 32, 43, 48, 54, 48, 1, 38, 60, 56, 66, 42, 96, 44, 12, 6, 72, 48, 44, 1, 3, 72, 14, 54, 93, 72, 88...
[ "nonn", "easy", "mult" ]
A114973
[ 1, 2, 4, 6, 8, 9, 84, 288, 628 ]
[ "nonn", "more", "hard" ]
A131319
[ 1, 2, 3, 5, 5, 9, 11, 13, 13, 17, 19, 13, 19, 25, 27, 26, 25, 33, 35, 32, 33, 34, 35, 45, 41, 49, 51, 53, 43, 34, 54, 51, 56, 56, 67, 61, 55, 73, 55, 67, 69, 81, 65, 85, 67, 82, 91, 93, 89, 97, 99, 88, 89, 105,...
[ "nonn", "base" ]
A189646
[ 8, 913, 55440, 3774889, 250758892, 16718653553, 1113666564608, 74192202677913, 4942510226322656, 329259659094878200, 21934564726533464000, 1.4612333598538324e+21, 9.73442096078231e+22 ]
[ "nonn" ]
A348728
[ 1, 1, 8, 7, 1, 0, 0, 8, 0, 7, 6, 0, 6, 4, 0, 9, 2, 0, 1, 6, 8, 3, 3, 7, 0, 0, 9, 8, 7, 2, 2, 7, 6, 1, 0, 9, 9, 3, 5, 2, 8, 4, 7, 1, 5, 1, 6, 8, 3, 6, 6, 5, 0, 1, 6, 0, 2, 7, 8, 7, 0, 4, 5, 0...
[ "nonn", "cons", "easy" ]
A382441
[ 1, 2, 5, 7, 8, 9, 10, 16, 20, 32, 40, 50, 51, 53, 64, 83, 93, 100, 117, 118, 126, 160, 186, 200, 207, 224, 250, 288, 311, 320, 352, 372, 391, 400, 448, 480, 500, 625, 640, 713, 800, 960, 979, 1000, 1011, 1039, 1043, 1097, ...
[ "nonn", "base" ]
A349075
[ 1, 4, 63, 1704, 64769, 3168060, 189447551, 13389885712, 1092011153409, 100934312212404, 10426892198424000, 1190514147664125200, 148874434455515000000, 2.023555472267569e+22, 2.9705114633247073e+24, 4.6835931501462726e+26, 7.893844972331051e+28 ]
[ "nonn" ]
A287346
[ 2, 4, 5, 8, 12, 14, 15, 18, 21, 24, 30, 32, 36, 38, 39, 42, 48, 50, 54, 56, 58, 60, 61, 64, 68, 70, 71, 74, 77, 80, 86, 88, 92, 94, 95, 98, 104, 106, 110, 112, 113, 116, 122, 124, 128, 130, 131, 134, 140, 142, 146, ...
[ "nonn", "easy" ]
A370081
[ 1, 8, 25, 60, 129, 256, 484, 872, 1512, 2532, 4110, 6484, 9975, 14992, 22065, 31860, 45207, 63126, 86868, 117934, 158130, 209600, 274874, 356916, 459189, 585694, 741053, 930566, 1160285, 1437090, 1768784, 2164158, 2633108, 3186722, 3837386, 45988...
[ "nonn" ]
A008385
[ 1, 30, 240, 1010, 2970, 7002, 14240, 26070, 44130, 70310, 106752, 155850, 220250, 302850, 406800, 535502, 692610, 882030, 1107920, 1374690, 1687002, 2049770, 2468160, 2947590, 3493730, 4112502, 4810080, 5592890, 6467610, 7441170, 8520752 ]
[ "nonn", "easy" ]
A312393
[ 1, 4, 8, 14, 17, 24, 27, 30, 36, 42, 42, 50, 56, 54, 65, 68, 75, 70, 84, 86, 86, 94, 104, 94, 113, 112, 123, 110, 132, 130, 130, 138, 152, 134, 161, 156, 171, 150, 180, 174, 174, 182, 200, 174, 209, 200, 219, 190, 228, ...
[ "nonn" ]
A075165
[ 0, 2, 10, 12, 42, 44, 170, 52, 50, 172, 682, 180, 2730, 684, 178, 56, 10922, 204, 43690, 692, 690, 2732, 174762, 184, 202, 10924, 210, 2740, 699050, 716, 2796202, 212, 2738, 43692, 714, 820, 11184810, 174764, 10930, 696, 44739242, 276...
[ "nonn", "base" ]
A119049
[ 3, 300, 3003, 23220, 203203, 322003, 32020003, 333220020, 3200200003, 320002000003, 2330203323003, 32000020000003, 332003222232003, 2203322302033203, 3200000200000003, 320000002000000000, 32000000020000002000, 233200332233023300000, 3.2000000002e+21 ]
[ "nonn", "base" ]
A309599
[ 1, 0, 0, 48, 480, 0, 1290240, 185794560, 8867730493440, 1852743352320000 ]
[ "nonn", "more", "hard" ]
A010375
[ 0, 1, 3, 4, 5, 9 ]
[ "nonn", "fini", "full" ]
A259891
[ 936, 4662, 40435, 202632, 863502, 5055255, 28982771, 144514845, 753909576, 4156538339, 22079571360, 115439403732, 616985118609, 3302552685297, 17486869963737, 92800385304502, 494726612194783, 2631317292421710 ]
[ "nonn" ]
A102715
[ 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 2, 1, 1, 4, 4, 4, 4, 1, 1, 2, 8, 8, 8, 2, 1, 1, 6, 12, 24, 24, 12, 6, 1, 1, 4, 12, 24, 24, 24, 12, 4, 1, 1, 6, 12, 24, 36, 36, 24, 12, 6, 1, 1, 4, 24, 32, 48, ...
[ "nonn", "tabl" ]
A361713
[ 0, 1, 17, 406, 10257, 268126, 7213166, 198978074, 5609330705, 161095277710, 4700175389142, 138986764820410, 4157185583199534, 125568602682092820, 3825026187780837400, 117376010145070700000, 3.625095243230563e+21, 1.1259659214202174e+23, 3.514965607470184e+24 ]
[ "nonn", "easy" ]
A293665
[ 1, -1, 0, -1, 0, -1, 1, -2, 0, -2, 2, -3, 1, -2, 2, -6, 2, -3, 7, -8, 2, -12, 12, -13, 0, -3, 4, -12, 17, -18, 19, -20, -19, -13, 34, -71, 54, -55, 8, -67, 73, -74, 79, -80, -72, -154, 238, -239, 39, -119, 163, -23...
[ "sign" ]
A108995
[ 1, 2, 9, 72, 890, 15456, 352807, 10093728, 349534881, 14270091790, 672991000968, 36076060520556, 2169580363847949, 144810568283675140, 10631141835083823000, 851921010801706800000, 7.403155075181089e+22 ]
[ "nonn" ]
A331091
[ 1, 2, 4, 6, 12, 18, 24, 27, 30, 36, 48, 55, 60, 72, 84, 90, 96, 100, 108, 110, 112, 116, 120, 144, 150, 156, 172, 176, 180, 184, 192, 196, 208, 228, 234, 240, 246, 252, 260, 264, 288, 300, 305, 320, 328, 330, 336, 340, 3...
[ "nonn", "base" ]
A277139
[ 2, 8, 15, 21, 27, 33, 34, 40, 46, 52, 59, 65, 71, 77, 78, 84, 90, 96, 103, 109, 115, 121, 122, 128, 134, 140, 147, 153, 159, 165, 166, 172, 178, 184, 191, 197, 203, 209, 210, 216, 222, 228, 235, 241, 247, 253, 254, 260, ...
[ "nonn", "easy" ]
A378567
[ 1, 1, 11, 88, 715, 5951, 50288, 429696, 3702987, 32125390, 280211701, 2454992618, 21588647392, 190444368401, 1684556756320, 14935618142768, 132695019071499, 1181070210132582, 10529299131757754, 94005323670592130, 840373149466892900, 7521508912742542000 ]
[ "nonn" ]
A175642
[ 1, 0, 0, 7, 9, 9, 6, 5, 4, 7, 9, 3, 9, 8, 6, 1, 1, 7, 2, 2, 6, 1, 6, 6, 6, 0, 7, 5, 5, 1, 2, 6, 7, 8, 5, 6, 6, 9, 9, 9, 0, 3, 1, 9, 5, 6, 6, 4, 9, 3, 2, 7, 0, 9, 7, 1, 6, 3, 7, 4, 5, 5, 3, 9...
[ "cons", "nonn" ]
A294664
[ 7, 68, 70, 324, 680, 700, 3240, 6800, 7000, 7618, 31177, 32400, 52308, 68000, 69314, 70000, 76180, 311770, 324000, 353068, 523080, 680000, 693140, 700000, 756658, 761800, 1039247, 2715974, 2732441, 3117700, 3240000, 3511617, 3530680, 4689368, 52308...
[ "nonn", "base" ]
A071600
[ 1, 3, 13, 19, 21, 23, 25, 30, 44, 45, 47, 57, 60, 61, 71, 77, 98, 99, 101, 103, 107, 108, 110, 118, 121, 125, 158, 159, 178, 179, 184, 186, 187, 188, 209, 215, 218, 221, 237, 244, 246, 247, 248, 249, 251, 279, 287, 312, ...
[ "base", "easy", "nonn" ]
A269691
[ 24, 201, 944, 2995, 7584, 16541, 32416, 58599, 99440, 160369, 248016, 370331, 536704, 758085, 1047104, 1418191, 1887696, 2474009, 3197680, 4081539, 5150816, 6433261, 7959264, 9761975, 11877424, 14344641, 17205776, 20506219, 24294720 ]
[ "nonn" ]
A196871
[ 1, 2, 4, 8, 16, 21, 32, 42, 64, 84, 85, 128, 168, 170, 256, 336, 340, 341, 453, 512, 672, 680, 682, 906, 909, 1024, 1344, 1360, 1364, 1365, 1812, 1813, 1818, 2048, 2688, 2720, 2728, 2730, 3624, 3626, 3636, 4096, 5376, 5440, 5456...
[ "nonn" ]
A140443
[ 0, 0, 1, 2, 4, 6, 11, 19, 31, 52, 86, 140, 228, 372, 604, 980, 1589, 2575, 4171, 6754, 10933, 17696, 28640, 46349, 75003, 121368, 196390, 317779, 514193, 831999, 1346223, 2178257, 3524519, 5702820, 9227389, 14930266, 24157719, 39088058 ]
[ "nonn" ]
A256195
[ 1, 1, 2, 6, 24, 119, 694, 4578, 33184, 258757, 2136978, 18478134, 165857600, 1535336290, 14584260700, 141603589300, 1400942032152, 14087464765300, 143689133196008, 1484090443264936, 15499968503875136, 163501005435759520, 1740170514634463500, 18671118911254800000 ]
[ "nonn" ]
A066140
[ 3, 6, 12, 20, 30, 45, 63, 84 ]
[ "nonn" ]
A283399
[ 1, 3, 5, 11, 17, 63, 125, 243, 473, 783, 1517, 2435, 7401, 13983, 17373, 56083, 65913, 235119, 451341, 571875, 2043305, 4055135, 7713181, 13147347, 25155129, 41886639, 125696717, 208790627, 358465321, 718552543, 1412347165, 2934546387, 5513207609 ]
[ "nonn", "easy" ]
A330584
[ 60, 168, 360, 504, 660, 1092, 2448, 2520, 3420, 4080, 5616, 6048, 6072, 7800, 7920, 20160, 20160, 25920, 62400, 95040, 126000, 181440, 443520, 604800, 979200, 1451520, 1814400, 3265920, 4245696, 10200960 ]
[ "nonn", "fini", "full" ]
A130695
[ 1, 3, 3, 6, 3, 9, 4, 9, 6, 12, 3, 15, 6, 12, 9, 15, 3, 21, 7, 15, 9, 18, 6, 24, 9, 15, 9, 24, 6, 30, 6, 15, 15, 24, 9, 30, 7, 21, 12, 30, 3, 33, 15, 21, 15, 24, 6, 39, 12, 27, 12, 27, 9, 42, 12, 21, 15, ...
[ "nonn" ]
A100598
[ 1, 2, 4, 5, 8, 10 ]
[ "nonn", "hard", "more", "less" ]
A288086
[ 4390386, 313530000, 11270290416, 276221817810, 5235847653036, 82234427131416, 1117259292848016, 13518984452463630, 148755268498286430, 1511718920778951000, 14358354462488121000, 128656798319026860000, 1.0957471497350342e+21, 8.924653047010982e+21, 6.986668904552303e+22 ]
[ "nonn" ]
A309948
[ 1, 0, 9, 8, 6, 8, 4, 1, 1, 3, 4, 6, 7, 8, 0, 9, 9, 6, 6, 0, 3, 9, 8, 0, 1, 1, 9, 5, 2, 4, 0, 6, 7, 8, 3, 7, 8, 5, 4, 4, 3, 9, 3, 1, 2, 0, 9, 2, 7, 1, 5, 7, 7, 4, 3, 7, 4, 4, 4, 1, 1, 5, 7, 8...
[ "nonn", "cons", "easy" ]
A383835
[ 1, 1, 2, 4, 12, 28, 76, 232, 776, 2632, 9496, 35696, 140272, 568624, 2390480, 10349536, 46208416, 211800992, 997313824, 4809701440, 23758694336, 119952723136, 618884638912, 3257843882624, 17492191242880, 95680444425856, 532985208200576, 3020676745975552 ]
[ "nonn", "easy" ]
A210480
[ 0, 0, 0, 1, 1, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 3, 3, 4, 4, 4, 5, 4, 4, 3, 3, 2, 2, 4, 4, 4, 5, 5, 7, 6, 6, 3, 4, 3, 3, 5, 5, 4, 5, 5, 7, 7, 6, 4, 3, 3, 4, 4, 3, 2, 4, 4, 7, 6, 6, 3, 3, 4...
[ "nonn" ]
A193253
[ 1, 183, 905, 2527, 5409, 9911, 16393, 25215, 36737, 51319, 69321, 91103, 117025, 147447, 182729, 223231, 269313, 321335, 379657, 444639, 516641, 596023, 683145, 778367, 882049, 994551, 1116233, 1247455, 1388577, 1539959, 1701961, 1874943, 2059265, 22...
[ "nonn", "easy", "changed" ]
A280585
[ 3, 0, 6, 1, 4, 6, 7, 4, 5, 8, 9, 2, 0, 7, 1, 8, 1, 7, 3, 8, 2, 7, 6, 7, 9, 8, 7, 2, 2, 4, 3, 1, 9, 0, 9, 3, 4, 0, 9, 0, 7, 5, 6, 4, 9, 9, 8, 8, 5, 0, 1, 6, 3, 3, 1, 4, 7, 0, 4, 0, 5, 0, 8, 5...
[ "nonn", "cons" ]
A190402
[ 2, 4, 8, 14, 20, 27, 45, 52, 75, 148, 195, 244, 292, 364, 628, 729, 772, 1108, 1196, 1215, 1252, 1406, 1552, 1588, 1684, 1701, 1828, 2164, 2452, 2644, 2692, 2924, 2932, 3028, 3125, 3508, 3825, 3982, 3988, 4372, 4462, 4612, 4804, 4...
[ "nonn" ]
A098290
[ 0, 2, 1, 10, 208, 380, 394, 159, 10, 208, 380, 394, 159, 10, 208, 380, 394, 159, 10, 208, 380, 394, 159, 10, 208, 380, 394, 159, 10, 208, 380, 394, 159, 10, 208, 380, 394, 159, 10, 208, 380, 394, 159, 10, 208, 380, 394, 15...
[ "nonn", "base" ]
A217163
[ 8554, 7720, 4277, 2790, 8533, 6176, 4442, 3860, 8, 2983, 2430, 5482, 1053, 5030, 3502, 5781, 3982, 4706, 8, 2568, 4850, 2740, 4549, 1395, 699, 2960, 2679, 3197, 8, 4057, 2709, 3115, 3436, 1190, 6629, 692, 3274, 5773, 8, 6997, 3536, 59...
[ "nonn", "base" ]
A045625
[ 1, 2, 1, 4, 7, 18, 29, 70, 126, 266, 507, 1054, 2037, 4158, 8183, 16488, 32760, 65790, 131026, 262654, 524265, 1049524, 2097119, 4196350, 8388450, 16781292, 33554367, 67116784, 134217657, 268451838, 536870247, 1073774590, 2147483520 ]
[ "nonn" ]
A070131
[ 8, 13, 20, 21, 25, 29, 30, 36, 37, 41, 42, 44, 49, 56, 57, 59, 62, 66, 67, 69, 74, 75, 77, 78, 79, 80, 86, 89, 96, 97, 99, 100, 101, 102, 105, 110, 111, 113, 115, 122, 123, 125, 126, 127, 128, 130, 131, 138, 141, 144, ...
[ "nonn" ]
A378655
[ 1, -2, -3, 0, -5, 6, -7, 0, 0, 10, -11, -4, -13, 14, 15, 0, -17, -4, -19, -2, 21, 22, -23, 0, 0, 26, 0, 0, -29, -42, -31, 0, 33, 34, 35, 12, -37, 38, 39, -4, -41, -54, -43, 0, 0, 46, -47, 0, 0, 0, 51, 0, -53, 8...
[ "sign" ]
A082500
[ 1, 2, 2, 3, 3, 5, 4, 7, 5, 11, 6, 13, 7, 17, 8, 19, 9, 23, 10, 29, 11, 31, 12, 37, 13, 41, 14, 43, 15, 47, 16, 53, 17, 59, 18, 61, 19, 67, 20, 71, 21, 73, 22, 79, 23, 83, 24, 89, 25, 97, 26, 101, 27, 103, 28,...
[ "nonn" ]
A014597
[ 1, 3, 5, 11, 12, 27, 29, 71, 72, 213, 215, 603, 635, 1917, 1183893 ]
[ "nonn", "more", "hard", "nice" ]
A186887
[ 4, 9, 9, 16, 4, 4, 9, 16, 4, 81, 4, 4, 16, 25, 9, 4 ]
[ "nonn" ]
A018187
[ 27664033, 46672291, 102690901, 130944133, 517697641, 545670533, 801123451, 855073301, 970355431, 1235188597, 3273820903, 3841324339, 3924969689, 4982970241, 5130186571, 5242624003, 6335800411, 7045248121 ]
[ "nonn" ]
A028789
[ 2, 3, 6, 7, 8, 10, 11, 12, 13, 14, 15, 18, 19, 21, 22, 23, 26, 27, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 58, 59, 60, 62, 63, 65, 66, 67, 69, 70, 71, 72,...
[ "nonn", "fini", "full" ]