id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A064312
[ 1, 2, 10, 80, 975, 16952, 397271, 12014900, 453748140, 20859612270, 1143989113475, 73628313849840, 5486361777107965, 467931786713485400, 45238398292112760000, 4.915902436799253e+21, 5.9604801899181456e+23 ]
[ "nonn" ]
A101143
[ 0, 1, 4, 6, 22, 31, 37, 46, 115, 139, 228, 246, 733, 930, 1345, 2161, 2545, 6979, 10282, 10542, 12127, 13740, 105319 ]
[ "nonn", "hard", "more" ]
A114578
[ 1, 4, 9, 2, 16, 6, 26, 12, 3, 21, 39, 8, 56, 33, 15, 5, 78, 25, 106, 49, 10, 69, 141, 38, 18, 7, 94, 28, 184, 125, 236, 55, 14, 77, 164, 42, 296, 24, 11, 105, 356, 36, 416, 212, 140, 270, 476, 60, 20, 84, 183, 52, ...
[ "nonn" ]
A354256
[ 1089, 9801, 698896, 10036224, 42263001, 637832238736, 1021178969603881, 1883069698711201, 4099923883299904, 6.916103777337773e+21 ]
[ "nonn", "base", "more" ]
A271604
[ 1, 5, 10, 38, 47, 131, 160, 296, 313, 593, 638, 1014, 1063, 1591, 1708, 2312, 2417, 3289, 3438, 4514, 4683, 6043, 6232, 7836, 8069, 9965, 10226, 12430, 12823, 15207, 15652, 18248, 18737, 21745, 22310, 25738, 26275, 30315, 30904, 35396, ...
[ "nonn", "easy" ]
A091332
[ 1234, 5678, 9101, 1121, 3141, 5161, 7181, 9202, 1222, 3242, 5262, 7282, 9303, 1323, 3343, 5363, 7383, 9404, 1424, 3444, 5464, 7484, 9505, 1525, 3545, 5565, 7585, 9606, 1626, 3646, 5666, 7686, 9707, 1727, 3747, 5767, 7787, 9808, 1828, 3848...
[ "base", "easy", "nonn" ]
A081942
[ 1, 2, 3, 4, 7, 10, 13, 24, 25, 28, 34, 37, 40, 43, 46, 51, 56, 60, 67, 70, 79, 84, 87, 94, 105, 106, 120, 126, 130, 133, 136, 147, 148, 151, 156, 161, 162, 163, 166, 171, 176, 177, 184, 190, 193, 204, 208, 211, 228, 23...
[ "nonn" ]
A349801
[ 0, 0, 1, 1, 3, 4, 8, 11, 18, 25, 37, 50, 71, 94, 128, 168, 223, 288, 376, 480, 617, 781, 991, 1243, 1563, 1945, 2423, 2996, 3704, 4550, 5589, 6826, 8333, 10126, 12293, 14865, 17959, 21618, 25996, 31165, 37318, 44562, 53153, 63239,...
[ "nonn" ]
A098355
[ 1, 3, 3, 9, 9, 9, 27, 27, 27, 27, 81, 81, 81, 81, 81, 243, 243, 243, 243, 243, 243, 729, 729, 729, 729, 729, 729, 729, 2187, 2187, 2187, 2187, 2187, 2187, 2187, 2187, 6561, 6561, 6561, 6561, 6561, 6561, 6561, 6561, 6561, 19683...
[ "nonn", "tabl" ]
A152487
[ 0, 1, 0, 1, 1, 0, 2, 1, 1, 0, 2, 2, 1, 2, 0, 2, 2, 1, 1, 1, 0, 2, 2, 1, 1, 1, 2, 0, 3, 2, 2, 1, 2, 1, 1, 0, 3, 3, 2, 3, 1, 2, 2, 3, 0, 3, 3, 2, 2, 1, 1, 2, 2, 1, 0, 3, 3, 2, 2, 1, 1, 1, 2, 1...
[ "nonn", "base", "tabl" ]
A236593
[ 256, 2680, 28462, 299860, 3170170, 33464862, 353620413, 3734464032, 39448646936, 416653521044, 4401066032032, 46485719000108, 491011136574116, 5186295545628364, 54780587232716550, 578621140400638600 ]
[ "nonn" ]
A365525
[ 1, 0, 0, 0, 1, 10, 65, 350, 1702, 7806, 34855, 157630, 770529, 4432220, 31307432, 259090260, 2316320073, 21172354778, 193091210857, 1744478148866, 15627203762926, 139526376391986, 1251976261264071, 11417796498945894, 107280845105151600 ]
[ "nonn" ]
A161273
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 2, 1, 2, 1, 2, 3, 3, 3, 5, 4, 5, 6, 8, 7, 9, 9, 11, 11, 12, 14, 16, 16, 17, 19, 21, 21, 24, 25, 29, 29, 33, 34, 40, 42, 46, 48, 56, 57, 64, 67, 79, 80, 89, ...
[ "nonn" ]
A157141
[ 29, 41, 61, 89, 127, 163, 167, 239, 251, 271, 293, 349, 389, 401, 409, 431, 439, 479, 521, 541, 569, 601, 613, 617, 631, 659, 761, 769, 809, 839, 859, 947, 967, 983, 1063, 1087, 1229, 1237, 1249, 1277, 1289, 1327, 1367, 1429, 14...
[ "nonn", "base", "less" ]
A003893
[ 0, 1, 1, 2, 3, 5, 8, 3, 1, 4, 5, 9, 4, 3, 7, 0, 7, 7, 4, 1, 5, 6, 1, 7, 8, 5, 3, 8, 1, 9, 0, 9, 9, 8, 7, 5, 2, 7, 9, 6, 5, 1, 6, 7, 3, 0, 3, 3, 6, 9, 5, 4, 9, 3, 2, 5, 7, 2, 9, 1, 0, 1, 1, 2...
[ "nonn", "base", "easy" ]
A011478
[ 1, 0, 7, 1, 5, 5, 4, 9, 3, 5, 2, 8, 7, 1, 8, 4, 0, 6, 1, 6, 9, 2, 7, 6, 1, 9, 4, 5, 9, 6, 5, 2, 6, 5, 1, 8, 9, 0, 9, 4, 5, 2, 0, 2, 9, 8, 7, 9, 0, 3, 8, 5, 6, 4, 0, 9, 9, 8, 0, 5, 9, 2, 5, 1...
[ "nonn", "cons" ]
A327429
[ 4, 7, 11, 101, 313, 727, 10301, 30103, 70207, 1003001, 3001003, 7014107, 100030001, 300020003, 700020007, 10000500001, 30000500003, 70005450007, 1000008000001, 3000002000003, 7000005000007, 100000323000001, 300000020000003, 700000141000007, 10000000500000000, 300000...
[ "nonn", "base" ]
A256667
[ 1, 9, 1, 0, 0, 9, 8, 8, 9, 4, 5, 1, 3, 8, 5, 6, 0, 0, 8, 9, 5, 2, 3, 8, 1, 0, 4, 1, 0, 8, 5, 7, 2, 1, 6, 4, 5, 9, 5, 4, 9, 8, 3, 8, 0, 7, 3, 2, 3, 6, 3, 7, 3, 6, 0, 5, 4, 0, 2, 4, 8, 3, 2, 8...
[ "nonn", "cons", "easy" ]
A173561
[ 1, 3, 7, 38, 47, 57, 157, 239, 829, 882, 993, 1772, 2673, 2917, 2943, 4747, 4952, 5257, 6118, 9466, 12943, 17557, 18543, 34208, 44179, 72662, 85353, 114669, 219602, 260359, 320078, 330182, 478707, 485298, 1083493, 1143007, 1477034, 1528649, ...
[ "nonn" ]
A150535
[ 1, 2, 7, 25, 111, 471, 2205, 9946, 47847, 223201, 1088255, 5176469, 25438052, 122515846, 605030485, 2938689467, 14559218790, 71139221518, 353227109342, 1733514423982, 8620898075065, 42448229693301, 211339074902906, 1043259951404713, 5198541928034299, 257136439803078...
[ "nonn", "walk" ]
A005051
[ 8, 24, 72, 216, 648, 1944, 5832, 17496, 52488, 157464, 472392, 1417176, 4251528, 12754584, 38263752, 114791256, 344373768, 1033121304, 3099363912, 9298091736, 27894275208, 83682825624, 251048476872, 753145430616, 2259436291848, 6778308875544, 20334926626632 ]
[ "nonn", "easy" ]
A199447
[ 6, 3, 8, 8, 9, 0, 3, 0, 3, 9, 5, 0, 9, 5, 0, 8, 0, 9, 1, 6, 4, 7, 9, 2, 9, 1, 3, 6, 6, 3, 0, 6, 3, 4, 3, 6, 9, 0, 5, 9, 3, 9, 2, 3, 0, 0, 6, 9, 9, 8, 6, 1, 7, 0, 6, 8, 2, 8, 4, 0, 4, 4, 3, 9...
[ "nonn", "cons" ]
A252324
[ 723110, 7391236, 96651850, 1374911658, 21966758822, 361804339326, 6064580742366, 102744429638974, 1748016658731578, 29797124749124400, 508629856632992300, 8686308686896514000, 148378705721929270000 ]
[ "nonn" ]
A056223
[ 1, 1, 0, -1, 1, 1, 0, -1, 0, 1, -1, -1, 1, -1, -3, 3, 2, 1, -1, 0, 1, -1, -2, -2, 1, 0, -4, -4, 0, 1, -3, -4, 3, 7, -10, 18, 43, 11, -13, -31, -18, 9, -5, -9, 11, 5, -5, -4, 13, 35, -40, -28, 24, -21, 1, 26...
[ "sign", "easy" ]
A282221
[ 1, 3, 1, 3, 5, 15, 9, 123, 413, 143, 457, 763, 1821, 2831, 7881, 15355, 32285, 40335, 81865, 157179, 314909, 524303, 1443785, 3713275, 4453149, 11900559, 33321929, 39611899, 116977181, 252768271, 57748425, 1609301243, 7851626269, 3775173263, 117152...
[ "nonn", "easy" ]
A091137
[ 1, 2, 12, 24, 720, 1440, 60480, 120960, 3628800, 7257600, 479001600, 958003200, 2615348736000, 5230697472000, 31384184832000, 62768369664000, 32011868528640000, 64023737057280000, 51090942171709440000, 102181884343418880000, 3.372002183332823e+22, 6.744004366665646e+22 ]
[ "nonn" ]
A186336
[ 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 2, 0, 0, 0, 1, 2, 0, 0, 0, 2, 0, 1, 1, 0, 1, 2, 1, 0, 0, 2, 0, 0, 0, 2, 1, 1, 1, 0, 1, 3, 0, 0, 0, 2, 0, 0, 1, 1, 1, 1, 1, 2, 0, 0, 1, 1, 0, 1, 3, 1, 1, 0, 1, 0...
[ "nonn" ]
A010688
[ 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7, 1, 7...
[ "nonn", "easy" ]
A110098
[ 1, 2, 1, 6, 6, 1, 22, 30, 10, 1, 90, 146, 70, 14, 1, 394, 714, 430, 126, 18, 1, 1806, 3534, 2490, 938, 198, 22, 1, 8558, 17718, 14002, 6314, 1734, 286, 26, 1, 41586, 89898, 77550, 40054, 13338, 2882, 390, 30, 1, 206098, 4610...
[ "nonn", "tabl" ]
A022875
[ 2, 1, 2, 3, 4, 6, 9, 14, 21, 32, 49, 75, 115, 177, 271, 416, 638, 980, 1504, 2309, 3544, 5440, 8351, 12819, 19678, 30207, 46370, 71182, 109269, 167737, 257489, 395265, 606763, 931428, 1429814, 2194875, 3369304, 5172143, 7939641 ]
[ "nonn" ]
A379138
[ 0, 4, 10, 504, 25242, 1110, 28782, 46764, 46254, 86058, 50094, 47874, 107880, 108180, 110100, 108990, 107070, 109800, 2726262, 2830272, 2698962, 3029292, 2900982, 2799972, 2979792, 3100002, 2998992, 4498944, 4409034, 4709064, 4510044, 4916184, 4790874,...
[ "nonn" ]
A274706
[ 1, 1, 0, 2, 0, 4, 2, 2, 0, 2, 0, 2, 6, 4, 6, 4, 4, 4, 2, 0, 6, 0, 6, 0, 4, 0, 2, 0, 2, 6, 24, 16, 20, 14, 16, 12, 8, 6, 8, 4, 4, 2, 8, 0, 14, 0, 14, 0, 10, 0, 10, 0, 6, 0, 4, 0, 2, 0, 2, 36, 52, ...
[ "nonn", "tabf" ]
A236568
[ 3, 5, 11, 31, 41, 43, 47, 67, 79, 107, 199, 223, 251, 263, 311, 313, 461, 467, 499, 577, 599, 641, 727, 743, 797, 911, 919, 929, 1163, 1187, 1277, 1303, 1429, 1433, 1447, 1613, 1619, 1621, 1637, 1783, 1789, 1823, 1831, 1867, 187...
[ "nonn" ]
A020493
[ 1, 3, 15, 30, 35, 56, 70, 78, 105, 140, 168, 190, 210, 248, 264, 357, 420, 570, 616, 630, 714, 744, 812, 840, 910, 1045, 1240, 1485, 1672, 1848, 2090, 2214, 2436, 2580, 2730, 3080, 3135, 3339, 3596, 3720, 3956, 4064, 4180, 4522, ...
[ "nonn" ]
A002064
[ 1, 3, 9, 25, 65, 161, 385, 897, 2049, 4609, 10241, 22529, 49153, 106497, 229377, 491521, 1048577, 2228225, 4718593, 9961473, 20971521, 44040193, 92274689, 192937985, 402653185, 838860801, 1744830465, 3623878657, 7516192769, 15569256449, 32212254721, 6657...
[ "nonn", "easy", "nice" ]
A021622
[ 0, 0, 1, 6, 1, 8, 1, 2, 2, 9, 7, 7, 3, 4, 6, 2, 7, 8, 3, 1, 7, 1, 5, 2, 1, 0, 3, 5, 5, 9, 8, 7, 0, 5, 5, 0, 1, 6, 1, 8, 1, 2, 2, 9, 7, 7, 3, 4, 6, 2, 7, 8, 3, 1, 7, 1, 5, 2, 1, 0, 3, 5, 5, 9...
[ "nonn", "cons", "easy" ]
A112923
[ 1, 1, 2, 2, 5, 4, 5, 7, 9, 7, 14, 10, 15, 23, 15, 15, 27, 19, 28, 39, 29, 26, 45, 36, 39 ]
[ "nonn", "more" ]
A206153
[ 1, 2, 7, 48, 693, 26632, 2542514, 533442978, 278979307990, 343728261289376, 904762216681139300, 5.771110378770243e+21, 8.874204751632742e+25, 2.912737209806573e+30, 2.2460473633968216e+35 ]
[ "nonn" ]
A087173
[ 1, 2, 3, 5, 7, 11, 3, 2, 2, 2, 2, 7, 101, 3, 2, 3, 3, 5, 2, 3, 2, 2, 5, 3, 2, 2, 2, 2, 5, 2, 2, 3, 3, 2, 3, 17977, 7, 5, 3, 2, 3, 2, 3, 5, 2, 2, 2, 3, 5, 2, 3, 3, 3, 5, 2, 11, 2, 2, 2, 17, 3, 2,...
[ "nonn" ]
A025668
[ 0, 0, 1, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 7, 0, 1, 2, 3, 4, 5, 6, 7, 8, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8...
[ "nonn", "easy", "changed" ]
A367338
[ 12, 24, 36, 48, 61, 73, 85, 97, 100, 11, 23, 35, 47, 59, 72, 84, 96, -1, 110, 22, 34, 46, 58, 71, 83, 95, -1, 109, 120, 33, 45, 57, 69, 82, 94, -1, 108, 119, 130, 44, 56, 68, 81, 93, -1, 107, 118, 129, 140, 55, 67, ...
[ "sign", "base" ]
A004854
[ 0, 1, 2, 3, 64, 65, 66, 128, 129, 192, 729, 730, 731, 793, 794, 857, 1458, 1459, 1522, 2187, 4096, 4097, 4098, 4160, 4161, 4224, 4825, 4826, 4889, 5554, 8192, 8193, 8256, 8921, 12288, 15625, 15626, 15627, 15689, 15690, 15753, 16354, ...
[ "nonn" ]
A331986
[ 1, 4, 8, 84, 56, 136, 52, 216, 16, 1504, 2352, 1152, 1344, 123216, 82432, 11008, 308992 ]
[ "nonn", "walk", "hard", "more" ]
A150940
[ 1, 2, 9, 34, 158, 679, 3259, 14778, 72035, 336351, 1652756, 7856265, 38791109, 186570598, 924127805, 4481227016, 22244859809, 108510762260, 539484498647, 2643340780016, 13156928004175, 64686223962835, 322245205614827, 1588570700484800, 7918963752318771, 391215294930...
[ "nonn", "walk" ]
A179106
[ 15, 22440, 2759640 ]
[ "nonn", "bref", "fini", "full" ]
A352228
[ 0, 0, 1, 1, 2, 2, 2, 3, 4, 4, 4, 4, 4, 5, 6, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 10, 11, 12, 13, 14, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 17, 18, 19, 20, 21, 22, 23, 24, ...
[ "nonn" ]
A235947
[ 81, 294, 905, 2584, 7353, 20800, 58896, 167240, 474948, 1344000, 3811120, 10818624, 30677136, 86900480, 246546816, 699399552, 1982514496, 5620085760, 15943384320, 45209722880, 128165455104, 363441340416, 1030800314368, 2922637780992 ]
[ "nonn" ]
A156446
[ 1, 2, 10, 18, 308, 1716, 83987, 644220, 42440517, 448032730, 40142592042, 617153224314, 75157230205402, 1794934830265052, 303255697073306240 ]
[ "nonn" ]
A059659
[ 1, 4, 5, 8, 10, 13, 16, 17, 20, 22, 25, 27, 28, 31, 32, 35, 39, 43, 44, 47, 51, 54, 56, 59, 62, 66, 68, 71, 74, 77, 78, 81, 83, 85, 86, 89, 90, 93, 97, 101, 102, 104, 105, 108, 112, 114, 117, 120, 124, 127, 129, 13...
[ "nonn" ]
A364451
[ 0, 0, 0, 0, 1, 2, 5, 7, 10, 13, 18, 22, 29, 34, 42, 49, 60, 69, 86, 100, 121, 139, 164, 187, 219, 252, 296, 343, 400, 458, 532, 605, 696, 794, 917, 1050, 1214, 1389, 1599, 1823, 2087, 2371, 2710, 3080, 3521 ]
[ "nonn" ]
A172321
[ 5, 7, 10, 13, 14, 18, 19, 26, 31, 38, 39, 43, 50, 55, 61, 62, 69, 72, 73, 78, 84, 86, 91, 95, 96, 98, 103, 108, 109, 110, 115, 119, 122, 123, 129, 133, 136, 138, 139, 145, 146, 151, 153, 159, 181, 182, 187, 190, 193, 1...
[ "dead" ]
A135790
[ 4, 7, 64, 112, 119, 164, 239, 324, 527, 567, 644, 959, 1024, 1519, 1792, 1904, 2047, 2500, 2624, 2884, 3479, 3824, 4207, 4324, 4375, 4879, 4964, 5184, 5572, 6647, 6887, 7327, 8119, 8432, 9072, 9604, 9639 ]
[ "nonn" ]
A246781
[ 12, 13, 16, 18, 20, 21, 27, 31, 34, 39, 44, 53, 59, 60, 65, 96, 97, 98, 99, 136, 154, 202, 214, 215, 220, 221, 280, 324, 325, 326, 365, 366, 736, 780, 2146, 2225, 3792, 5946, 5947, 5948, 6902, 6903, 18524, 22078, 23510, 23511,...
[ "nonn" ]
A038380
[ 0, 0, 0, 1, 1, 6, 24, 109, 477, 2155, 9647, 43621, 197767, 901436, 4125636, 18964119, 87508095, 405289754, 1883445328, 8780346115, 41052409755, 192461618324, 904573028990, 4261485821599, 20119936936041, 95186856459869 ]
[ "nonn" ]
A102942
[ 1, 2, 8, 26, 44, 167, 185, 3818, 8741, 50795 ]
[ "more", "nonn" ]
A359016
[ 4, 7, 9, 16, 31, 48, 28, 160, 54, 512, 128, 512, 946, 4224, 512, 10240, 11566, 4095, 1024, 65535, 94794, 180224, 22796, 262143, 1048575, 7077888, 1339848 ]
[ "nonn", "more" ]
A165202
[ 1, 3, 3, -1, -6, -6, 1, 9, 9, -1, -12, -12, 1, 15, 15, -1, -18, -18, 1, 21, 21, -1, -24, -24, 1, 27, 27, -1, -30, -30, 1, 33, 33, -1, -36, -36, 1, 39, 39, -1, -42, -42, 1, 45, 45, -1, -48, -48, 1, 51, 51, -1, -54...
[ "easy", "sign" ]
A287120
[ 1, 8, 25, 70, 225, 748, 2401, 7668, 24649, 79344, 255025, 819494, 2634129, 8467464, 27217089, 87483296, 281199361, 903867144, 2905317801, 9338615022, 30017295025, 96485195716, 310134268609, 996870677460, 3204261102025, 10299519778080, 33105949765729, 10641310783...
[ "nonn", "easy" ]
A122011
[ 0, 1, 13, 141, 1499, 15899, 168585, 1787533, 18953419, 200965203, 2130856217, 22593703397, 239563527915, 2540118496459, 26933156445577, 285575226955869, 3027985613779691, 32106065273909412, 340424149534129300 ]
[ "nonn", "easy" ]
A338259
[ 1, 12, 18, 41, 24, 120, 200, 120, 24, 11, 36, 306, 996, 1446, 984, 303, 42, 21, 48, 576, 2800, 6525, 7848, 4957, 1644, 274, 22, 11, 60, 930, 6020, 19365, 33600, 32487, 17694, 5336, 858, 71, 21, 72, 1368, 11064, 45435, 103200, 13...
[ "nonn", "tabf" ]
A214638
[ 1, 6, 936, 379366, 249664758, 221005209058, 239143562020194, 299233941746053000, 417999868371999100000, 6.36568066798406e+23, 1.0392676529600817e+27, 1.7967049653510786e+30, 3.258764657213579e+33 ]
[ "nonn" ]
A068904
[ 1, 3, 6, 35, 15, 495, 28, 1365, 286, 3060, 66, 376740, 91, 10626, 10626, 169911, 153, 3262623, 190, 5245786, 35960, 58905, 276, 2558620845, 4495, 111930, 91390, 32468436, 435, 11969016345, 496, 67945521, 194580, 316251, 194580, 783768050065, 70...
[ "nonn" ]
A367953
[ 2, 2, 4, 2, 2, 4, 2, 4, 4, 6, 2, 2, 4, 2, 2, 4, 2, 4, 4, 6, 2, 2, 4, 2, 4, 4, 6, 2, 4, 4, 6, 4, 6, 6, 8, 2, 2, 4, 2, 2, 4, 2, 4, 4, 6, 2, 2, 4, 2, 2, 4, 2, 4, 4, 6, 2, 2, 4, 2, 4, 4, 6, 2, 4...
[ "nonn" ]
A347187
[ 1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 3, 6, 3, 1, 1, 3, 8, 8, 3, 1, 1, 3, 9, 14, 9, 3, 1, 1, 3, 9, 19, 19, 9, 3, 1, 1, 3, 9, 21, 32, 21, 9, 3, 1, 1, 3, 9, 22, 42, 42, 22, 9, 3, 1, 1, 3, 9, 22, 48, 66, ...
[ "nonn", "tabl" ]
A285982
[ 1, 1, 2, 0, 3, 0, 0, 0, 5, 0, 6, 0, 0, 0, 8, 0, 9, 0, 0, 0, 11, 0, 0, 0, 0, 0, 14, 0, 15, 0, 0, 0, 0, 0, 18, 0, 0, 0, 20, 0, 21, 0, 0, 0, 23, 0, 0, 0, 0, 0, 26, 0, 0, 0, 0, 0, 29, 0, 30, 0, 0, 0...
[ "nonn" ]
A293745
[ 1, 1, 2, 6, 15, 45, 136, 429, 1406, 4771, 16749, 60453, 224948, 857010, 3350574, 13366375, 54494538, 226020624, 954737292, 4092229831, 17813005015, 78509835288, 350592604663, 1582430253294, 7223028969003, 33275812688050, 154790795962448, 725871751770492 ]
[ "nonn" ]
A310118
[ 1, 3, 6, 11, 18, 22, 24, 27, 30, 33, 36, 44, 54, 55, 54, 57, 60, 63, 66, 77, 90, 88, 84, 87, 90, 93, 96, 110, 126, 121, 114, 117, 120, 123, 126, 143, 162, 154, 144, 147, 150, 153, 156, 176, 198, 187, 174, 177, 180, 183...
[ "nonn" ]
A111341
[ 0, 0, 0, 0, 0, 396, 6120, 10934400, 1225559160, 130025295822240, 252282619805005440, 2.2096172187252513e+24, 9.875865581683372e+28 ]
[ "nonn", "more" ]
A347506
[ 1, 4, 12, 36, 108, 324, 972, 2916, 8676, 25572, 74124, 213788, 614444, 1757012, 5001372, 14175996, 40113156, 113363284, 319328028, 897533236, 2521069708, 7052715556, 19742289948, 55129924484, 153874225436 ]
[ "nonn", "walk", "more" ]
A198907
[ 1, 4, 2051, 319608038, 4717456775959530, 2.869765342757083e+24 ]
[ "nonn" ]
A170787
[ 0, 1, 8448, 2401326, 134348800, 3052734375, 39187120896, 339131713228, 2199090364416, 11438589937725, 50000500000000, 189876095765466, 641961812164608, 1968693495099331, 5556013743302400, 14596482234375000 ]
[ "nonn", "easy" ]
A207654
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[ "nonn" ]
A141010
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[ "nonn" ]
A109322
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[ "nonn" ]
A046905
[ 1, 1, 0, 0, 24, 360, 17400, 1066800 ]
[ "nonn" ]
A243340
[ 1, 1, 1, 2, 8, 3, 5, 7, 8, 8, 8, 9, 8, 7, 6, 4, 2, 4, 8, 3, 7, 5, 2, 3, 9, 6, 4, 3, 7, 3, 2, 0, 6, 2, 4, 1, 1, 9, 9, 1, 9, 9, 0, 6, 8, 4, 6, 5, 3, 7, 9, 6, 0, 0, 3, 2, 6, 6, 4, 3, 6, 4, 9, 3...
[ "nonn", "cons", "easy" ]
A371646
[ 1, 1, 8, 59942025, 2.398307374973189e+29, 7.88243862228623e+77 ]
[ "nonn" ]
A314536
[ 1, 5, 8, 15, 17, 25, 24, 37, 33, 43, 47, 48, 61, 55, 69, 65, 76, 79, 81, 91, 89, 100, 101, 107, 109, 117, 118, 127, 129, 133, 141, 140, 153, 147, 161, 159, 166, 175, 171, 185, 181, 192, 193, 199, 203, 207, 214, 217, 223,...
[ "nonn" ]
A131273
[ 1, 23, 299, 313, 171287, 435705, 487475, 3774601, 219347813, 9613155161, 5150163868035, 37365789554345, 228914067371295 ]
[ "more", "nonn", "less" ]
A180343
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[ "sign", "easy", "less" ]
A188495
[ 0, 1, 2, 4, 10, 36, 120, 368, 1089, 3304, 10168, 31312, 95880, 293120, 896824, 2746569, 8411818, 25756220, 78853410, 241421436, 739183568, 2263249600, 6929580817, 21216729488, 64960656448, 198894856144, 608971496032, 1864533223584, 5708777321872 ]
[ "nonn", "easy" ]
A126304
[ 0, 0, 0, 1, 0, 1, 1, 2, 1, 0, 1, 1, 2, 1, 1, 2, 2, 3, 2, 1, 2, 1, 2, 0, 1, 1, 2, 1, 1, 2, 2, 3, 2, 1, 2, 1, 2, 1, 2, 2, 3, 2, 2, 3, 3, 4, 3, 2, 3, 2, 3, 1, 2, 2, 3, 2, 1, 2, 1, 2, 2, 3, 2, 3...
[ "nonn" ]
A356199
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[ "nonn" ]
A343664
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[ "nonn" ]
A133793
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[ "nonn" ]
A216560
[ 5, 7, 17, 29, 43, 137, 449, 509, 569, 571, 2971, 4723, 9677, 14431, 104911, 433781, 604711, 931517, 1049897 ]
[ "nonn" ]
A026917
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[ "nonn", "easy" ]
A253579
[ 1, 22801, 1666681, 47411143081, 3465632747641, 98584929298781650, 7206305041398229000, 2.0499375575652578e+23, 1.4984516863488437e+25, 4.2625622595730236e+29, 3.115823495428984e+31, 8.863409985188232e+35 ]
[ "nonn", "easy" ]
A341292
[ 1, 3, 4, 6, 7, 10, 11, 13, 14, 17, 17, 19, 20, 23, 24, 26, 27, 30, 31, 33, 34, 37, 38, 40, 41, 44, 44, 46, 47, 50, 51, 53, 54, 56, 57, 59, 60, 63, 64, 66, 67, 70, 70, 72, 73, 76, 77, 79, 80, 83, 84, 86, 87, 90,...
[ "nonn" ]
A273518
[ 1, 27, 1325, 6375, 6899, 13445 ]
[ "nonn", "more" ]
A052631
[ 0, 1, 4, 30, 288, 3480, 50400, 851760, 16450560, 357436800, 8629286400, 229162348800, 6638962176000, 208362342988800, 7042436719718400, 255029193619200000, 9851119008546816000, 404305986955014200000, 1.7569457946995836e+22, 8.059120495244565e+23 ]
[ "easy", "nonn" ]
A186322
[ 2, 3, 5, 6, 8, 10, 11, 13, 15, 16, 18, 19, 21, 23, 24, 26, 28, 29, 31, 32, 34, 36, 37, 39, 41, 42, 44, 46, 47, 49, 50, 52, 54, 55, 57, 59, 60, 62, 63, 65, 67, 68, 70, 72, 73, 75, 77, 78, 80, 81, 83, 85, 86, 88,...
[ "nonn" ]
A348651
[ 1, 1, 1, 4, 29, 293, 2566, 24844, 259437, 2908263, 35102629, 455204360, 6321171774 ]
[ "nonn", "base", "more" ]
A080470
[ 10, 12, 30, 4, 15, 6, 27, 8, 9, 10, 110, 12, 123, 14, 15, 16, 117, 18, 119, 20, 21, 22, 123, 24, 25, 26, 27, 28, 129, 30, 231, 32, 33, 34, 35, 36, 237, 38, 39, 40, 141, 42, 143, 44, 45, 46, 147, 48, 49, 50, 51, 52,...
[ "base", "nonn" ]
A202681
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[ "nonn" ]
A265804
[ 1, 19, 29, 95, 229, 619, 1601, 4211, 11005, 28831, 75461, 197579, 517249, 1354195, 3545309, 9281759, 24299941, 63618091, 166554305, 436044851, 1141580221, 2988695839, 7824507269, 20484825995, 53629970689, 140405086099, 367585287581, 962350776671 ]
[ "nonn" ]
A081687
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[ "easy", "nonn" ]
A380688
[ 4, 1, 5, 8, 6, 3, 9, 6, 6, 8, 8, 9, 6, 3, 1, 1, 7, 9, 7, 9, 2, 1, 4, 4, 5, 6, 6, 4, 7, 3, 5, 1, 5, 5, 2, 1, 7, 8, 5, 3, 4, 7, 2, 4, 8, 6, 5, 2, 9, 9, 1, 8, 4, 8, 8, 5, 1, 2, 2, 0, 8, 5, 4, 7...
[ "cons", "nonn" ]
A232370
[ 2, 14, 58, 230, 934, 3794, 15354, 62266, 252346, 1022806, 4145638, 16802922, 68105158, 276041834, 1118844570, 4534868126, 18380594246, 74499685134, 301959937342, 1223895154962, 4960655920226, 20106384977054, 81494609451994 ]
[ "nonn" ]
A093672
[ 2, 23, 233, 2333, 23333, 23333333333, 23333333333333332, 2.333333333333333e+22, 2.3333333333333335e+53, 2.3333333333333333e+91 ]
[ "nonn" ]