id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A203363
[ 91, 85, 51, 38, 33, 29, 23, 19, 17, 13, 11, 2, 7, 1 ]
[ "nonn", "frac", "full", "fini" ]
A040624
[ 25, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2, 50, 2,...
[ "nonn", "cofr", "easy" ]
A276546
[ 1, 3, 6, 15, 19, 34, 37, 88, 141, 216, 239, 246, 288, 365, 429, 762, 1879, 2309, 9555, 19843, 28348, 45058, 62879, 86963, 90669, 148020, 148601, 199003, 289877 ]
[ "nonn", "more", "hard" ]
A066463
[ 1, 2, 3, 4, 6, 13, 15, 16, 20, 21, 24, 26, 28, 30, 36, 42, 241, 255, 256, 272, 287, 305, 320, 325, 340, 369, 384, 385, 408, 429, 465, 480, 482, 488, 495, 496, 510, 525, 572, 574, 610, 616, 620, 650, 700, 732, 738, 744, 7...
[ "nonn" ]
A361613
[ 3225600, 27398246400, 58912149381120, 35354354296504320, 13112764372566835000, 3.994995853001761e+21, 1.1128345670456604e+24, 2.969897749726336e+26, 7.761611649466489e+28, 2.007525320833655e+31, 5.1657285664211546e+33 ]
[ "nonn", "easy" ]
A295018
[ 81, 484, 784, 841, 1681, 3481, 3844, 5184, 6084, 8100, 8281, 8464, 8836, 10816, 11881, 14884, 15876, 16384, 18225, 22801, 25281, 28224, 28561, 31684, 33856, 36481, 36864, 38025, 38416, 40804, 43681, 48400, 48841, 53824, 58081, 58564, 67081, 6...
[ "nonn", "base" ]
A032978
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 16, 17, 23, 24, 25, 31, 32, 33, 39, 40, 41, 47, 48, 49, 50, 56, 57, 58, 64, 65, 66, 105, 106, 107, 113, 114, 115, 121, 122, 123, 162, 163, 164, 170, 171, 172, 178, 179, 180, 219, 220, ...
[ "nonn", "base" ]
A156338
[ 1, -11, -12, 2123, 2172, -360371, -1102932, 1035689611, 1056359292, -319185648221, -1627743248052, 1202397156295313, 3679092612819612, -1605938618222598700, -11465642472931189000, 4.619820700050636e+22, 4.7119049550414876e+22 ]
[ "sign", "frac" ]
A331647
[ 1, 13, 313, 11655, 439779, 14699033, 453027131, 14035890205, 418049781331, 11878976385087, 326859368114097, 8708114475309677, 224507928640721920, 5621130329235753000, 136998397230581630000, 3.2535567146657283e+21, 7.541594807151666e+22, 1.7087060730994585e+24 ]
[ "nonn" ]
A131937
[ 1, 4, 8, 14, 21, 29, 38, 49, 61, 74, 88, 103, 120, 138, 157, 177, 198, 220, 244, 269, 295, 322, 350, 379, 409, 440, 473, 507, 542, 578, 615, 653, 692, 732, 773, 816, 860, 905, 951, 998, 1046, 1095, 1145, 1196, 1248, 1302, 13...
[ "nonn" ]
A267992
[ 1, 21, 145, 1122, 7886, 58446, 405196, 2865756, 19652430, 135666717, 917861737, 6247996468, 41874859669, 281884085368, 1877330322718, 12537690094009, 83063782595536, 551574419251898, 3639691674489757, 24059481994135080 ]
[ "nonn" ]
A305882
[ -2, 1, 1, 4, 4, 13, 16, 44, 52, 112, 182, 411, 620, 1318, 2142, 5148, 7676, 15228, 27530, 58660, 98372, 207392, 364464, 763263, 1341508, 2773990, 4923220, 10470948, 18510902, 37546152, 69269976, 148419094, 258284232, 534761242, 981480012, 2004302...
[ "sign" ]
A142261
[ 227, 313, 571, 743, 829, 1087, 1259, 1861, 2377, 2549, 3323, 3581, 4441, 4871, 4957, 5387, 5903, 6247, 6763, 7193, 7451, 7537, 8053, 8311, 8741, 8999, 9257, 9343, 9601, 9859, 10289, 10891, 11149, 11321, 11579, 11923, 12611, 12697, 13127, ...
[ "nonn", "easy" ]
A038171
[ 1, 1, 3, 12, 61, 407, 3226, 28335, 262091, 2501168, 24328920, 239931556 ]
[ "nonn", "hard", "more" ]
A164029
[ 1, 0, 5, 7, 9, 8, 11, 13, 15, 14, 17, 19, 21, 20, 23, 25, 24, 27, 26, 29, 31, 33, 32, 35, 34, 37, 39, 38, 41, 43, 45, 44, 47, 49, 48, 51, 50, 53, 55, 54, 57, 56, 59, 61, 63, 62, 65, 64, 67, 69, 68, 71, 73, 75, ...
[ "nonn", "easy" ]
A261867
[ 1, 1, 2, 1, 3, 2, 1, 2, 4, 3, 1, 2, 5, 3, 4, 1, 2, 4, 3, 6, 5, 1, 2, 3, 7, 6, 5, 4, 1, 2, 3, 5, 8, 4, 6, 7, 1, 2, 3, 4, 8, 5, 7, 9, 6, 1, 2, 3, 4, 6, 9, 8, 7, 10, 5, 1, 2, 3, 4, 6, 7, 5, 11, ...
[ "nonn", "tabl" ]
A155804
[ 1, 1, 1, 4, 19, 161, 1606, 21022, 323485, 5874913, 122077756, 2871573596, 75437801539, 2193468714373, 70020045331510, 2437979768144026, 92073099488632450, 3753886179551636500, 164556499026975500000 ]
[ "nonn" ]
A375151
[ 1, 4, 6, 1, 9, 0, 2, 2, 0, 0, 0, 8, 1, 5, 4, 3, 6, 2, 6, 1, 1, 6, 3, 7, 7, 2, 0, 6, 6, 8, 3, 1, 4, 5, 8, 5, 1, 9, 3, 6, 7, 5, 2, 8, 3, 0, 7, 5, 9, 4, 6, 2, 2, 4, 0, 8, 5, 5, 3, 1, 8, 4, 9, 3...
[ "nonn", "cons", "easy" ]
A323326
[ 2, 3, 2, 2, 1, 1, 0, 2, 4, 4, 3, 5, 4, 4, 4, 4, 3, 5, 4, 4, 4, 4, 3, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 5, 4, 4, 4, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 4, 4, 4, 3, 5, 4, 4, 4, 4...
[ "nonn" ]
A190492
[ 5, 10, 17, 22, 27, 29, 34, 39, 46, 51, 58, 63, 68, 75, 80, 87, 92, 97, 99, 104, 109, 116, 121, 126, 128, 133, 138, 145, 150, 157, 162, 167, 169, 174, 179, 186, 191, 196, 198, 203, 208, 215, 220, 227, 232, 237, 244, 249, ...
[ "nonn" ]
A183148
[ 0, 1, 4, 13, 22, 43, 52, 73, 94, 151, 160, 181, 202, 259, 280, 337, 394, 559, 568, 589, 610, 667, 688, 745, 802, 967, 988, 1045, 1102, 1267, 1324, 1489, 1654, 2143, 2152, 2173, 2194, 2251, 2272, 2329, 2386, 2551, 2572, 2629 ]
[ "nonn" ]
A387438
[ 2, 106, 614, 2658, 10406, 39298, 146618, 544858, 2022242, 7502602, 27831590, 103240050, 382960198, 1420553730, 5269401338, 19546309418, 72505044994, 268950077226, 997642902822, 3700654671362, 13727201336742, 50919654289410, 188881267873530, 700635812456570, 2598937137...
[ "nonn", "easy" ]
A047830
[ 2, 4, 14, 26, 62, 134, 393, 1774, 13682, 41037, 167073, 334142, 4677862, 14033577, 79464886, 476789307, 3488435822, 34884358195 ]
[ "nonn" ]
A008695
[ 1, 288, 189648, 16845696, 397610064, 4630772160, 34415914176, 187485113088, 814904105040, 2975518758816, 9486517914720, 27053099888256, 70486130167488, 169930928938176, 384163702086528 ]
[ "nonn" ]
A314249
[ 1, 5, 11, 17, 23, 29, 35, 40, 45, 51, 57, 63, 69, 75, 80, 85, 91, 97, 103, 109, 115, 120, 125, 131, 137, 143, 149, 155, 160, 165, 171, 177, 183, 189, 195, 200, 205, 211, 217, 223, 229, 235, 240, 245, 251, 257, 263, 269, ...
[ "nonn" ]
A034289
[ 144, 169, 196, 256, 441, 625, 961, 1024, 1089, 1296, 1369, 1764, 1936, 2401, 2916, 4096, 4761, 9216, 9604, 9801, 10201, 10404, 10609, 11236, 11664, 12100, 12544, 12769, 14400, 14884, 16384, 16641, 16900, 17689, 18225, 18769, 19600, 20736 ]
[ "nonn", "base" ]
A264894
[ 0, 1, 261, 1956, 7291, 19500, 42846, 82621, 145146, 237771, 368875, 547866, 785181, 1092286, 1481676, 1966875, 2562436, 3283941, 4148001, 5172256, 6375375, 7777056, 9398026, 11260041, 13385886, 15799375, 18525351, 21589686, 25019281, 28842066, 33087000 ]
[ "nonn", "easy" ]
A045837
[ 0, 0, 0, 1, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 2, 0, 0, 0, 1, 0, 2, 0, 0, 0, 2, 0, 1, 0, 0, 0, 2, 0, 2, 0, 0, 0, 2, 0, 2, 0, 0, 0, 1, 0, 2, 0, 0, 0, 2, 0, 4, 0, 0, 0, 2, 0, 2, 0, 0, 0, 2, 0, 4...
[ "nonn" ]
A073304
[ 365, 334, 306, 275, 245, 214, 184, 153, 122, 92, 61, 31, 0 ]
[ "fini", "full", "nonn" ]
A100976
[ 1, 7, 4, 107, 6, 124, 8, 6835, 13, 762, 12, 31724, 14, 4088, 24, 6999011, 18, 26611, 20, 3121122, 32, 98292, 24, 519765964, 31, 458738, 40, 267911128, 30, 3145704, 32, 1834748739523, 48, 9437166, 48, 27903655871, 38, 41943020, 56 ]
[ "nonn" ]
A305685
[ 1, 1, 1, 1, 4, 1, 1, 8, 8, 1, 1, 24, 25, 24, 1, 1, 82, 139, 139, 82, 1, 1, 272, 818, 1595, 818, 272, 1, 1, 908, 4869, 17947, 17947, 4869, 908, 1, 1, 3076, 29339, 207116, 383910, 207116, 29339, 3076, 1, 1, 10444, 177688, ...
[ "nonn", "tabl" ]
A266798
[ 10, 100, 100, 100, 100, 100, 100, 100, 100, 89, 99, 1000, 1000, 818, 1000, 1000, 1000, 1000, 168, 90, 100, 1000, 1000, 1000, 1000, 727, 336, 247, 1000, 899, 100, 1000, 1000, 1000, 1000, 1000, 326, 636, 1000, 899, 100, 1000, 1000, ...
[ "nonn", "base" ]
A017551
[ 128, 105413504, 8031810176, 114415582592, 781250000000, 3521614606208, 12151280273024, 34792782221696, 86812553324672, 194871710000000, 402271083010688, 775771085481344, 1414067010444416, 2458100350228352 ]
[ "nonn", "easy" ]
A072438
[ 1, 2, 3, 4, 1, 6, 7, 8, 9, 2, 11, 12, 1, 14, 3, 16, 1, 18, 19, 4, 21, 22, 23, 24, 1, 2, 27, 28, 1, 6, 31, 32, 33, 2, 7, 36, 1, 38, 3, 8, 1, 42, 43, 44, 9, 46, 47, 48, 49, 2, 3, 4, 1, 54, 11, 56, 57, 2, ...
[ "nonn", "mult", "easy" ]
A166985
[ 2, 3, 2, 3, 2, 5, 2, 3, 3, 5, 11, 11, 23, 29, 41, 23, 53, 29, 41, 83, 89, 53, 113, 131, 83, 173, 89, 179, 191, 113, 233, 239, 251, 131, 281, 293, 173, 179, 359, 191, 419, 431, 443, 233, 239, 491, 251, 509, 281, 293, ...
[ "nonn" ]
A346759
[ 0, 1, 2, 5, 6, 12, 12, 21, 22, 32, 30, 52, 42, 62, 64, 85, 72, 113, 90, 136, 124, 152, 132, 212, 162, 212, 204, 262, 210, 324, 240, 341, 304, 362, 324, 477, 342, 452, 424, 552, 420, 624, 462, 640, 590, 662, 552, 852, 612...
[ "nonn", "look" ]
A115693
[ 1, 8, 72, 100, 343, 800, 1000, 1331, 7200, 8000, 10000, 34300, 72000, 80000, 100000, 133100, 343000, 720000, 800000, 1000000, 1030301, 1331000, 1367631, 3430000, 7200000, 8000000, 10000000, 13310000, 34300000, 72000000, 80000000, 100000000, 103030100, ...
[ "nonn", "base" ]
A029485
[ 1, 3, 5, 9, 15, 25, 75, 257, 321, 435, 795, 1285, 2313, 8523, 39759, 60855, 91209, 247875, 251385, 2695341, 5095725, 9529505, 12179807, 12341125, 57965805, 1380206235, 15616692345, 22548618825, 26313971049 ]
[ "nonn", "base", "more" ]
A384638
[ 43, 47, 97, 101, 151, 157, 167, 199, 281, 293, 487, 601, 607, 809, 839, 967, 1013, 1069, 1129, 1223, 1249, 1259, 1289, 1361, 1367, 1543, 1571, 1663, 1753, 1861, 1871, 1873, 1997, 2141, 2281, 2551, 2593, 2909, 3121, 3271, 3313, 3361, ...
[ "nonn", "base" ]
A205135
[ 5, 7, 3, 11, 1, 5, 2, 19, 1, 3, 2, 5, 1, 1, 2, 35, 1, 5, 2, 3, 1, 1, 2, 9, 1, 3, 1, 5, 1, 1, 2, 67, 1, 3, 3, 3, 1, 1, 1, 7, 1, 5, 2, 1, 2, 1, 2, 13, 3, 7, 1, 3, 1, 1, 3, 5, 2, 3, 2, 1 ]
[ "nonn" ]
A311390
[ 1, 4, 8, 12, 16, 24, 30, 30, 36, 42, 48, 52, 56, 56, 60, 68, 76, 76, 82, 86, 92, 98, 104, 102, 108, 114, 120, 118, 128, 134, 138, 142, 148, 146, 156, 162, 168, 162, 172, 178, 184, 190, 194, 188, 200, 208, 216, 208, 220, ...
[ "nonn" ]
A176751
[ 1, 5, 9, 42, 173, 846, 4177, 21691, 114911, 622910, 3428951, 19138401, 108003785, 615344844, 3534413525, 20444816044, 118994823449, 696370777980, 4095034311841, 24185709305851, 143402427296079, 853276282454676 ]
[ "easy", "nonn" ]
A150913
[ 1, 2, 9, 32, 145, 614, 2784, 12620, 58059, 270181, 1264034, 5956457, 28216807, 134146037, 640650720, 3067452503, 14732785393, 70928275807, 342192431351, 1654255532866, 8010396644949, 38850821829694, 188695274436468, 917643848410718, 4467954208325315, 217774029044427...
[ "nonn", "walk" ]
A292502
[ 1, 7, 43, 399, 6091, 151255, 6550307, 465127199, 58293976795, 12191724780647, 4471204259257363, 2799295142330495000, 3.026340345288168e+21, 5.704756586858875e+24, 1.828779373166404e+28, 1.0373652111119021e+32, 9.907882549514546e+35, 1.685993148174685e+40, 4.814471549766295e+44 ]
[ "nonn" ]
A262902
[ 5, 4, 11, 17, 14, 16, 22, 22, 29, 27, 35, 32, 41, 46, 44, 46, 51, 48, 57, 57, 58, 65, 62, 70, 69, 77, 81, 80, 92, 91, 101, 96, 107, 102, 111, 110, 111, 119, 118, 114, 129, 120, 129, 130, 128, 128, 139, 141, 138, 147, ...
[ "nonn" ]
A169615
[ 2, 3, 1, 5, 2, 1, 8, 4, 2, 1, 13, 6, 4, 2, 1, 21, 10, 7, 4, 2, 1, 34, 17, 11, 6, 4, 2, 1, 55, 27, 18, 11, 6, 4, 2, 1, 89, 44, 29, 17, 11, 6, 4, 2, 1, 144, 72, 48, 28, 18, 11, 6, 4, 2, 1, 233, 116, 77, ...
[ "nonn", "tabl" ]
A095744
[ 43, 53, 71, 79, 83, 101, 109, 113, 139, 149, 163, 197, 263, 269, 283, 293, 307, 353, 359, 379, 389, 409, 433, 439, 449, 461, 499, 523, 547, 571, 593, 619, 643, 673, 691, 751, 773, 811, 821, 839, 857, 863, 881, 887, 907, 983, ...
[ "nonn", "base" ]
A373328
[ 0, 2, 5, 9, 12, 15, 19, 22, 29, 32, 39, 46, 53, 56, 63, 70, 73, 80, 87, 90, 97, 104, 111, 114, 121, 131, 155, 172, 189, 213, 230, 254, 271, 295, 312, 329, 353, 370, 394, 411, 428, 452, 469, 493, 510, 527, 551, 568, 592, ...
[ "nonn" ]
A361487
[ 75, 135, 147, 189, 225, 245, 363, 375, 405, 441, 507, 525, 567, 605, 675, 735, 825, 845, 847, 867, 875, 891, 945, 975, 1029, 1053, 1083, 1089, 1125, 1183, 1215, 1225, 1275, 1323, 1375, 1377, 1425, 1445, 1485, 1521, 1539, 1575, 1587,...
[ "nonn" ]
A278262
[ 2, 4, 2, 8, 2, 12, 16, 2, 12, 24, 12, 32, 2, 12, 24, 30, 24, 12, 60, 24, 64, 2, 12, 24, 30, 24, 30, 210, 60, 48, 12, 60, 12, 180, 8, 24, 16, 128, 2, 12, 24, 30, 24, 30, 210, 60, 48, 30, 210, 30, 420, 12, 60, 24...
[ "nonn", "base" ]
A047755
[ 0, 0, 1, 5, 26, 133, 708, 3861, 21604, 123266, 715221, 4206956, 25032840, 150413348, 911379384, 5562367173, 34164355848, 211015212580, 1309815397995, 8166460799805, 51120054233490, 321156223592865, 2024257417812240, 12797201858645100 ]
[ "nonn" ]
A039332
[ 32, 68, 96, 132, 160, 196, 224, 257, 258, 259, 261, 262, 263, 264, 272, 280, 296, 304, 312, 324, 352, 388, 416, 452, 480, 524, 532, 540, 545, 546, 547, 549, 550, 551, 556, 564, 572, 580, 608, 644, 672, 708, 736, 769, 770, 771,...
[ "nonn", "base", "easy" ]
A386400
[ 1, 2, 4, 7, 13, 20, 28, 36 ]
[ "nonn", "more" ]
A206283
[ 1, 3, 1, 5, 3, 1, 9, 7, 3, 1, 12, 12, 7, 3, 1, 20, 21, 14, 7, 3, 1, 25, 31, 24, 14, 7, 3, 1, 38, 47, 40, 26, 14, 7, 3, 1, 49, 66, 61, 43, 26, 14, 7, 3, 1, 69, 93, 92, 70, 45, 26, 14, 7, 3, 1, 87, 124, 1...
[ "nonn", "tabl" ]
A045160
[ 31, 157, 158, 159, 161, 166, 171, 181, 206, 231, 281, 406, 531, 787, 788, 789, 792, 793, 794, 797, 798, 799, 807, 808, 809, 811, 816, 821, 832, 833, 834, 836, 841, 846, 857, 858, 859, 861, 866, 871, 907, 908, 909, 911, 916, 92...
[ "nonn", "base" ]
A376711
[ 1, 0, 1, 4, 10, 20, 36, 60, 98, 156, 250, 396, 631, 992, 1555, 2400, 3673, 5536, 8265, 12176, 17781, 25692, 36846, 52404, 74080, 104028, 145344, 201972, 279420, 384764, 527696, 720668, 980482, 1328728, 1794118, 2413520, 3235440, 4321968, 57...
[ "nonn" ]
A299009
[ 1, 7, 20, 174, 6908, 379236, 59666756, 22388413097, 20692923925827 ]
[ "nonn" ]
A389012
[ 1, 0, 9, 4, 5, 9, 5, 9, 1, 5, 9, 1, 1, 4, 5, 0, 0, 1, 2, 1, 0, 7, 3, 7, 1, 9, 9, 2, 8, 9, 4, 9, 1, 8, 6, 3, 9, 0, 3, 6, 8, 5, 8, 6, 8, 6, 9, 7, 6, 2, 9, 9, 2, 2, 6, 1, 4, 6, 6, 6, 6, 4, 7, 2...
[ "nonn", "cons" ]
A302090
[ 0, 1, 2, 3, 6, 7, 134, 533, 2911, 4351 ]
[ "nonn", "more", "hard" ]
A176852
[ 7, 11, 15, 17, 21, 23, 27, 29, 31, 35, 37, 41, 43, 45, 47, 49, 53, 57, 59, 61, 63, 67, 71, 73, 75, 77, 79, 83, 87, 91, 93, 95, 99, 101, 105, 107, 109, 111, 115, 117, 121, 123, 125, 129, 131, 133, 135, 139, 141, 143, ...
[ "nonn" ]
A011721
[ 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0...
[ "nonn" ]
A207836
[ 0, 3, 16, 75, 336, 1463, 6240, 26199, 108640, 445995, 1815792, 7341347, 29505840, 117982815, 469672384, 1862393775, 7359403968, 28991540051, 113892526800, 446305331451, 1744950085648, 6808253393415, 26513475730464, 103072540115975, 400058834841120 ]
[ "nonn", "easy" ]
A141642
[ 12, 14, 16, 20, 21, 25, 30, 32, 34, 38, 49, 50, 52, 56, 58, 65, 70, 74, 76, 85, 92, 94, 98, 102, 104, 106, 110, 111, 115, 119, 120, 122, 124, 128, 133, 140, 142, 146, 148, 155, 160, 164, 166, 175, 182, 184, 188, 200, 201...
[ "nonn", "base" ]
A352047
[ 0, 2, 3, 4, 5, 8, 7, 8, 12, 12, 11, 16, 13, 16, 23, 16, 17, 26, 19, 24, 31, 24, 23, 32, 30, 28, 39, 32, 29, 48, 31, 32, 47, 36, 47, 52, 37, 40, 55, 48, 41, 64, 43, 48, 77, 48, 47, 64, 56, 62, 71, 56, 53, 80, ...
[ "nonn", "easy" ]
A191597
[ 0, 1, 6, 21, 85, 342, 1365, 5461, 21846, 87381, 349525, 1398102, 5592405, 22369621, 89478486, 357913941, 1431655765, 5726623062, 22906492245, 91625968981, 366503875926, 1466015503701, 5864062014805, 23456248059222, 93824992236885, 375299968947541 ]
[ "nonn", "easy" ]
A122655
[ 0, 1, 8, 24, 52, 185, 578, 2412 ]
[ "dead" ]
A366444
[ 1, 1, -1, 2, 0, -2, 2, -1, 0, -1, 4, 0, 0, 0, -4, 2, -2, -2, 0, 0, 2, 6, 0, 0, 0, 0, 0, -6, 4, -2, 0, -1, 0, 0, 0, -1, 6, 0, -4, 0, 0, 0, 0, 0, -2, 4, -4, 0, 0, -4, 0, 0, 0, 0, 4, 10, 0, 0, 0, 0, ...
[ "sign", "tabl" ]
A133326
[ 2, 8, 20, 50, 118, 292, 688, 1702, 4010, 9920, 23372, 57818, 136222, 336988, 793960, 1964110, 4627538, 11447672, 26971268, 66721922, 157200070, 388883860, 916229152, 2266581238, 5340174842, 13210603568, 31124819900, 76997040170, 181408744558, 448771637452 ]
[ "nonn" ]
A321144
[ 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 2, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1...
[ "nonn", "tabf" ]
A159574
[ 313, 337, 365, 1513, 1685, 1877, 8765, 9773, 10897, 51077, 56953, 63505, 297697, 331945, 370133, 1735105, 1934717, 2157293, 10112933, 11276357, 12573625, 58942493, 65723425, 73284457, 343542025, 383064193, 427133117, 2002309657 ]
[ "nonn", "easy" ]
A205425
[ 102, 1662, 29022, 513038, 9083342, 160862398, 2848901694, 50454831598, 893569527598, 15825374247326, 280271949540510, 4963697203151822, 87908511615418000, 1556885139957443600, 27572885656837390000 ]
[ "nonn" ]
A016184
[ 1, 19, 277, 3667, 46405, 573667, 7001653, 84843379, 1023885349, 12326977795, 148206208789, 1780451832211, 21379263273733, 256648048295203, 3080454802615285, 36970205192893360, 443675695245290000 ]
[ "nonn", "easy" ]
A050605
[ 0, 0, 1, 1, 0, 0, 2, 2, 0, 0, 1, 1, 0, 0, 3, 3, 0, 0, 1, 1, 0, 0, 2, 2, 0, 0, 1, 1, 0, 0, 4, 4, 0, 0, 1, 1, 0, 0, 2, 2, 0, 0, 1, 1, 0, 0, 3, 3, 0, 0, 1, 1, 0, 0, 2, 2, 0, 0, 1, 1, 0, 0, 5, 5...
[ "nonn" ]
A068895
[ 1, 8, 729, 14526784, 10557204381300759000, 4.357957833542749e+55 ]
[ "nonn" ]
A107913
[ 9, 13, 25, 37, 43, 49, 61, 67, 73, 97, 109, 121, 151, 157, 163, 169, 181, 193, 211, 225, 229, 241, 277, 283, 289, 313, 331, 337, 361, 373, 397, 409, 421, 433, 457, 487, 523, 529, 541, 547, 577, 601, 613, 625, 631, 661, 673, ...
[ "nonn" ]
A137042
[ 1, 3, 6, 13, 19, 31, 63, 369, 31131, 969119 ]
[ "base", "nonn", "more" ]
A386089
[ 2, 3, 11, 13, 23, 31, 83, 113, 131, 181, 211, 223, 233, 281, 283, 311, 313, 331, 383, 811, 821, 823, 881, 883, 1123, 1181, 1213, 1223, 1231, 1283, 1321, 1381, 1811, 1823, 1831, 2111, 2113, 2131, 2213, 2221, 2281, 2311, 2333, 2381,...
[ "nonn", "base", "easy" ]
A266073
[ 0, 2, 4, 2, 8, 2, 12, 2, 16, 2, 20, 2, 24, 2, 28, 2, 32, 2, 36, 2, 40, 2, 44, 2, 48, 2, 52, 2, 56, 2, 60, 2, 64, 2, 68, 2, 72, 2, 76, 2, 80, 2, 84, 2, 88, 2, 92, 2, 96, 2, 100, 2, 104, 2, 108, 2, 112, 2...
[ "nonn", "easy" ]
A188569
[ 3, 5, 7, 8, 10, 10, 11, 13, 14, 15, 13, 14, 19, 18, 19, 17, 16, 21, 20, 25, 21, 18, 26, 21, 25, 22, 23, 30, 24, 31, 21, 22, 32, 30, 33, 21, 29, 31, 28, 36, 27, 30, 35, 36, 34, 23, 27, 41, 35, 38, 35, 26, 40, 36...
[ "nonn" ]
A339968
[ 1, 2, 3, 4, 5, 7, 9, 11, 13, 15, 16, 17, 18, 19, 21, 23, 25, 27, 29, 31, 32, 33, 35, 36, 37, 39, 41, 43, 45, 47, 50, 51, 53, 57, 59, 61, 64, 65, 67, 69, 71, 72, 73, 75, 77, 79, 81, 83, 87, 89, 91, 93, 95, 97, ...
[ "nonn" ]
A073225
[ 1, 1, 2, 5, 11, 27, 65, 164, 417, 1068, 2756, 7148, 18614, 48639, 127464, 334865, 881658, 2325751, 6145597, 16263867, 43099805, 114356612, 303761261, 807692035, 2149632062, 5726042116, 15264691108, 40722913455, 108713644517 ]
[ "nonn" ]
A344722
[ 1, 15, 81, 240, 610, 1230, 2336, 3840, 6371, 9455, 14097, 19615, 27441, 36205, 48849, 61874, 79860, 99470, 124816, 150846, 186498, 221646, 267232, 313840, 373059, 431599, 508595, 581009, 673635, 767835, 881357, 989615, 1131667, 1264111, 1429875, ...
[ "nonn" ]
A205496
[ 1, 79, 2475, 47191, 656683, 7349140, 70148989, 593513485, 4571277561, 32672880245, 219830952888, 1407595988962, 8650512982826, 51368774778763, 296342413123845, 1668132449230997, 9195464663247238, 49787415018534290, 265430586786327780 ]
[ "nonn" ]
A255369
[ -1, 0, 0, 4, 0, 5, 0, 12, 6, 7, 0, 30, 0, 9, 8, 28, 0, 40, 0, 42, 10, 13, 0, 70, 10, 15, 24, 54, 0, 123, 0, 60, 14, 19, 12, 108, 0, 21, 16, 98, 0, 159, 0, 78, 64, 25, 0, 150, 14, 84, 20, 90, 0, 130, 16, 126...
[ "sign" ]
A221985
[ 313968931, 6926576780, 75545517171, 2332950292798, 26362646685307290, 157261278401555740, 11893629184686938000, 40838913299508510000, 270600054840430030000, 2.032486593027726e+23, 4.316467868923257e+23, 9.078603228792885e+23, 2.535699587078277e+24 ]
[ "nonn", "easy" ]
A148506
[ 1, 1, 3, 5, 17, 34, 121, 275, 1027, 2590, 10031, 27276, 108111, 309217, 1245407, 3700035, 15109579, 46351554, 191582849, 603772290, 2520070013, 8119770391, 34161939771, 112140631822, 475080016603, 1585016149409, 6756186193979, 22864248697362, 97983457230083, ...
[ "nonn", "walk" ]
A186535
[ 73494218, 110986523654, 192072734086538, 330651060182605060, 561052248760733660000 ]
[ "nonn" ]
A080469
[ 36, 57, 121, 132, 552, 8397, 7000713, 9692541, 36294723, 564033861 ]
[ "nonn", "more", "hard" ]
A380347
[ 1, 3, 7, 9, 27, 17, 23, 13, 31, 53, 73, 47, 29, 21, 33, 19, 37, 41, 11, 57, 63, 77, 51, 101, 59, 67, 151, 93, 109, 49, 39, 79, 81, 91, 181, 107, 161, 43, 163, 71, 83, 87, 69, 113, 89, 61, 131, 157, 233, 133, 137, 1...
[ "nonn", "base", "easy" ]
A141518
[ 1, 3, 5, 7, 9, 1, 3, 5, 7, 9, 1, 3, 5, 7, 9, 1, 3, 5, 7, 9, 1, 3, 5, 7, 9, 1, 3, 5, 7, 9, 1, 3, 5, 7, 9, 1, 3, 5, 7, 9, 1, 3, 5, 7, 9, 1, 3, 5, 7, 9, 1, 3, 5, 7, 9, 1, 3, 5, 7, 9, 1, 3, 5, 7...
[ "nonn", "easy" ]
A039346
[ 23, 58, 87, 122, 135, 143, 159, 167, 175, 183, 184, 185, 187, 188, 189, 190, 215, 250, 279, 314, 343, 378, 407, 442, 450, 458, 464, 465, 467, 468, 469, 470, 474, 482, 490, 498, 535, 570, 599, 634, 647, 655, 671, 679, 687, 695,...
[ "nonn", "base", "easy" ]
A238699
[ 2, 5, 7, 17, 19, 47, 67, 89, 157, 227, 229, 307, 349, 439, 467, 487, 509, 599, 647, 797, 929, 1039, 1187, 1217, 1237, 1259, 1307, 1427, 1447, 1567, 1789, 2027, 2309, 2467, 2539, 2707, 2789, 2819, 3167, 3457, 3499, 3659, 3877, 3919...
[ "nonn" ]
A168618
[ 6, 60, 84, 126, 150, 204, 216, 300, 444, 546, 606, 630, 654, 696, 720, 990, 1044, 1140, 1170, 1176, 1224, 1236, 1254, 1266, 1326, 1386, 1506, 1536, 1620, 1686, 1770, 1866, 1884, 1950, 2106, 2124, 2316, 2394, 2436, 2520, 2586, 2604, ...
[ "nonn", "easy" ]
A200041
[ 0, 26, 264, 1074, 3054, 7104, 14156, 25546, 42928, 67782, 102250, 148624, 209216, 286370, 383924, 503834, 650334, 826512, 1036716, 1283846, 1574252, 1909734, 2297538, 2740864, 3246472, 3817174, 4462780, 5184398, 5992386, 6889492, 7886048 ]
[ "nonn" ]
A288854
[ 25, 625, 5625, 75625, 275625 ]
[ "nonn", "fini", "full", "base" ]
A000548
[ 1, 4, 9, 16, 36, 49, 64, 81, 121, 144, 196, 256, 324, 361, 441, 484, 529, 576, 729, 784, 961, 1024, 1089, 1296, 1444, 1764, 1849, 1936, 2116, 2209, 2304, 2401, 2916, 3136, 3249, 3481, 3844, 3969, 4096, 4356, 4489 ]
[ "nonn" ]
A213191
[ 0, 0, 1, 0, 1, 3, 0, 1, 4, 6, 0, 1, 6, 9, 12, 0, 1, 10, 17, 20, 20, 0, 1, 18, 39, 44, 35, 35, 0, 1, 34, 101, 122, 87, 66, 54, 0, 1, 66, 279, 392, 287, 180, 105, 86, 0, 1, 130, 797, 1370, 1119, 660, 311, 176, ...
[ "nonn", "tabl" ]
A268701
[ 1, 1, 1, 5, 7, 27, 195, 421, 1619, 8675, 105757, 274029, 1402193, 6625987, 55349787, 975068069, 3137395939, 17960895375, 101880880461, 696011551909, 7596647200175, 197122787505191, 723879298052695, 4905597865756059, 29537689035766500, 227793692735075900 ]
[ "nonn" ]
A083196
[ 2, 19, 166, 731, 2194, 5227, 10694, 19651, 33346, 53219, 80902, 118219, 167186, 230011, 309094, 407027, 526594, 670771, 842726, 1045819, 1283602, 1559819, 1878406, 2243491, 2659394, 3130627, 3661894, 4258091, 4924306, 5665819, 6488102, 7396819, 8397826...
[ "nonn", "easy" ]
A272552
[ 11376, 14562, 15057, 15723, 16659, 20421, 21330, 24867, 28494, 28746 ]
[ "nonn", "base", "fini", "full" ]