id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A315775
[ 1, 6, 12, 6, 6, 12, 18, 42, 30, 36, 18, 30, 36, 60, 66, 54, 48, 42, 54, 84, 90, 90, 54, 72, 66, 96, 108, 114, 102, 78, 96, 114, 126, 132, 114, 126, 102, 138, 138, 150, 144, 138, 150, 150, 168, 162, 150, 168, 162, 192 ]
[ "nonn" ]
A266159
[ 8, 16, 40, 272, 5512, 149232, 3741272, 88206664, 2011246768, 44947984536, 994530883200, 21910419274224, 482270052357104, 10627338833274072, 234722322559349060, 5199318920693107000, 115536868266599860000 ]
[ "nonn" ]
A236069
[ 3, 79, 83, 107, 211, 401, 491, 881, 1013, 1061, 1367, 1637, 1669, 1811, 2029, 2309, 2399, 2459, 2671, 2713, 2963, 3109, 3203, 3407, 3593, 3709, 3733, 3929, 4219, 4457, 4513, 4639, 4703, 4729, 5417, 5641, 6047, 6113 ]
[ "nonn" ]
A315575
[ 1, 6, 12, 12, 18, 18, 30, 36, 36, 36, 48, 48, 54, 66, 60, 66, 72, 78, 84, 90, 84, 96, 102, 102, 114, 114, 114, 120, 132, 132, 138, 138, 144, 150, 156, 162, 162, 168, 168, 180, 186, 186, 186, 198, 198, 204, 216, 210, 216, 222 ]
[ "nonn" ]
A253907
[ 1, 976, 5380, 16582, 17864, 22316, 27922, 34930, 44954, 50744, 61264, 72670, 107534, 147776, 193774, 195266, 240170, 260920, 265292, 281582, 314462, 337832, 342014, 367060, 379784, 383930, 384704, 392050, 421226, 455734, 463790, 498134, 499306, 510194, 538384 ]
[ "nonn" ]
A100036
[ 1, 2, 3, 5, 7, 12, 14, 23, 25, 38, 40, 57, 59, 80, 82, 107, 109, 138, 140, 173, 175, 212, 214, 255, 257, 302, 304, 353, 355, 408, 410, 467, 469, 530, 532, 597, 599, 668, 670, 743, 745, 822, 824, 905, 907, 992, 994, 1083, 1085, 1178, 1180, 1277, 1279, 1380 ]
[ "nonn" ]
A370669
[ 1, 1, 2, 5, 20, 103, 630, 4475, 36232, 329341, 3320890, 36787889, 444125628, 5803850515, 81625106990, 1229298774647, 19738870726160, 336627732586105, 6076590994501938, 115752541255203870, 2320456607696181000, 48833227436258930000, 1.0764206259312845e+21 ]
[ "nonn" ]
A060325
[ -3, -1, -1, 16, -1, 28, -1, 40, 101, -1, 133, 76, -1, 88, 197, 221, -1, 253, 136, -1, 301, 160, 341, 554, 196, -1, 208, -1, 220, 1433, 256, 533, -1, 1147, -1, 613, 637, 328, 677, 701, -1, 1483, -1, 388, -1, 2044, 2164, 448, -1, 460, 941, -1, 1963, 1013, 1037, 1061, -1, 1093, 556, -1, 2299, 3593, 616, -1, 628, 3881 ]
[ "easy", "sign" ]
A285631
[ -3, -1, 0, 0, 0, 3, 5, 6, 8, 12, 15, 17, 21, 26, 30, 33, 39, 45, 50, 54, 62, 69, 75, 81, 90, 98, 105, 113, 123, 132, 140, 150, 161, 171, 180, 192, 204, 215, 225, 239, 252, 264, 276, 291, 305, 318, 332, 348, 363, 377, 393, 410, 426, 441, 459, 477, 494, 510, 530 ]
[ "sign", "easy" ]
A384940
[ 9, 4, 15, 6, 21, 10, 25, 14, 33, 22, 35, 26, 39, 34, 49, 38, 51, 46, 55, 58, 57, 62, 65, 74, 69, 82, 77, 86, 85, 94, 87, 106, 91, 118, 93, 122, 95, 134, 111, 142, 115, 146, 119, 158, 121, 166, 123, 178, 129, 194, 133, 202, 141, 206, 143, 214, 145, 218, 155, 226, 159, 254, 161, 262, 169, 274, 177 ]
[ "nonn", "look" ]
A299201
[ 1, 1, 1, 2, 1, 2, 1, 3, 2, 2, 1, 5, 1, 2, 2, 5, 1, 4, 1, 4, 2, 2, 1, 8, 2, 2, 3, 4, 1, 6, 1, 7, 2, 2, 2, 11, 1, 2, 2, 8, 1, 5, 1, 4, 4, 2, 1, 16, 2, 4, 2, 4, 1, 7, 2, 7, 2, 2, 1, 13, 1, 2, 5, 11, 2, 5, 1, 4, 2, 6, 1, 19, 1, 2, 4, 4, 2, 5, 1, 13, 5, 2, 1, 13, 2 ]
[ "nonn" ]
A250443
[ 81, 324, 324, 1296, 2160, 1296, 3600, 14400, 14400, 3600, 10000, 60000, 160000, 60000, 10000, 22500, 250000, 1000000, 1000000, 250000, 22500, 50625, 787500, 6250000, 8750000, 6250000, 787500, 50625, 99225, 2480625, 27562500, 76562500 ]
[ "nonn", "tabl" ]
A360722
[ 1, 1, 1, 5, 1, 1, 1, 13, 10, 1, 1, 5, 1, 1, 1, 17, 1, 10, 1, 5, 1, 1, 1, 13, 26, 1, 37, 5, 1, 1, 1, 49, 1, 1, 1, 50, 1, 1, 1, 13, 1, 1, 1, 5, 10, 1, 1, 17, 50, 26, 1, 5, 1, 37, 1, 13, 1, 1, 1, 5, 1, 1, 10, 85, 1, 1, 1, 5, 1, 1, 1, 130, 1, 1, 26, 5, 1, 1, 1, 17 ]
[ "nonn", "mult", "easy" ]
A018474
[ 1, 2, 3, 6, 79, 158, 237, 474 ]
[ "nonn", "fini", "full", "easy" ]
A001031
[ 1, 2, 2, 2, 2, 2, 3, 2, 3, 3, 3, 4, 3, 2, 4, 3, 4, 4, 3, 3, 5, 4, 4, 6, 4, 3, 6, 3, 4, 7, 4, 5, 6, 3, 5, 7, 6, 5, 7, 5, 5, 9, 5, 4, 10, 4, 5, 7, 4, 6, 9, 6, 6, 9, 7, 7, 11, 6, 6, 12, 4, 5, 10, 4, 7, 10, 6, 5, 9, 8, 8, 11, 6, 5, 13, 5, 8, 11, 6, 8, 10, 6, 6, 14, 9, 6, 12, 7, 7, 15, 7, 8, 13, 5, 8, 12, 8, 9 ]
[ "nonn", "easy", "nice" ]
A178808
[ 1, 7, 97, 1791, 38241, 892039, 22092673, 571387903, 15271248769, 418796912007, 11725812711009, 333962374092543, 9648543623050592, 282164539499639550, 8338391167566635000, 248661515283002500000, 7.474768663941435e+21 ]
[ "nonn" ]
A328480
[ 0, 0, 0, 1, 2, 3, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 ]
[ "nonn" ]
A253128
[ 22, 1968, 4083, 98124, 570578, 7036012, 54817908, 503679532, 4023378619, 33615995160, 268926369666, 2182138427066, 17455223471532, 140332925179614 ]
[ "nonn" ]
A279251
[ 1, 10, 101, 1110, 101, 101110, 1010101, 10111110, 101000101, 1110101110, 100010101, 101010111110, 1010101000101, 10101110101110, 101010100010101, 1010101010111110, 10101000001000100, 101010111010101100, 1010001010000010100, 10101010101110110000 ]
[ "nonn", "easy" ]
A234854
[ 1, 4, 18, 96, 624, 4896, 45072, 474624, 5619456, 73903104, 1069106688, 16872800256, 288483876864, 5311773904896, 104789944829952, 2205099306123264, 49302137885884420, 1167150882577711000, 29165495002777387000, 767163772371852100000, 2.1188300138891476e+22 ]
[ "nonn" ]
A173922
[ 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]
[ "nonn" ]
A132737
[ 1, 1, 1, 1, 5, 1, 1, 7, 7, 1, 1, 9, 13, 9, 1, 1, 11, 21, 21, 11, 1, 1, 13, 31, 41, 31, 13, 1, 1, 15, 43, 71, 71, 43, 15, 1, 1, 17, 57, 113, 141, 113, 57, 17, 1, 1, 19, 73, 169, 253, 253, 169, 73, 19, 1, 1, 21, 91, 241, 421, 505, 421, 241, 91, 21, 1, 1, 23, 111, 331, 661, 925, 925, 661, 331, 111, 23, 1 ]
[ "nonn", "tabl" ]
A173128
[ 1, 3, 161, 27379, 9478657, 5517751251, 4841332221601, 5964153172084899, 9814664424981012000, 2.079177784223458e+22, 5.510660563975548e+25, 1.786276728696452e+29, 6.951659085509068e+32 ]
[ "nonn" ]
A291958
[ 1, 1, -1, 2, -1, -1, 3, -2, 0, 2, -3, 2, 2, -4, 2, 2, -5, 5, 0, -6, 7, -1, -6, 9, -5, -5, 12, -9, -1, 12, -12, 0, 12, -15, 4, 13, -19, 9, 11, -22, 13, 9, -27, 21, 5, -28, 29, -1, -30, 34, -8, -29, 44, -18, -28, 51, -28, -22, 57, -42, -16, 63, -53, -6, 66, -70, 7, 67 ]
[ "sign" ]
A228138
[ 4, 13, 20, 50, 63, 111, 130, 196, 221, 305, 336, 438, 475, 595, 638, 776, 825, 981, 1036, 1210, 1271, 1463, 1530, 1740, 1813, 2041, 2120, 2366, 2451, 2715, 2806, 3088, 3185, 3485, 3588, 3906, 4015, 4351, 4466, 4820, 4941, 5313, 5440, 5830, 5963, 6371, 6510 ]
[ "nonn", "easy" ]
A284821
[ 1, 6, 2, 3, 4, 5, 10, 7, 9, 12, 15, 14, 24, 22, 8, 20, 11, 21, 13, 18, 30, 26, 42, 33, 70, 16, 28, 17, 35, 40, 66, 60, 34, 48, 44, 19, 25, 90, 55, 45, 56, 39, 84, 36, 63, 105, 165, 210, 38, 23, 65, 77, 52, 110, 120, 140, 78, 132, 80, 50, 51, 154, 32, 130, 27 ]
[ "nonn" ]
A187393
[ 6, 13, 20, 27, 34, 40, 47, 54, 61, 68, 75, 81, 88, 95, 102, 109, 116, 122, 129, 136, 143, 150, 157, 163, 170, 177, 184, 191, 198, 204, 211, 218, 225, 232, 238, 245, 252, 259, 266, 273, 279, 286, 293, 300, 307, 314, 320, 327, 334, 341, 348, 355, 361, 368, 375, 382, 389, 396, 402, 409, 416, 423, 430, 437, 443, 450, 457, 464, 471, 477 ]
[ "nonn" ]
A066539
[ 64, 26, 304, 544, 136, 112, 2310, 1120, 13064, 64, 4050, 18018, 8980, 23670, 17550, 784, 11512, 26420, 4480, 4576, 18064, 5720, 84544, 81304, 110852, 43184, 17888, 17150, 11680, 3510, 69296, 76144, 67072, 76592, 9328, 115592, 70592, 61110, 21712 ]
[ "nonn" ]
A195899
[ 1, 4, 16, 138, 2361, 68954, 3847840, 397723933, 77013373733, 27852983681710, 18823781848131320 ]
[ "nonn" ]
A247638
[ 1, 1, 6, 42, 313, 2407, 18848, 149271, 1191092, 9553551, 76910632 ]
[ "nonn", "more" ]
A050812
[ 9, 9, 8, 8, 7, 7, 5, 5, 4, 3, 3, 1, 1, 1, 1, 2, 2, 2, 2, 0, 2, 3, 1, 1, 2, 1, 2, 2, 2, 1, 1, 2, 1, 2, 1, 1, 2, 1, 1, 0, 3, 1, 1, 1, 1, 2, 2, 0, 1, 1, 2, 2, 2, 0, 1, 3, 1, 2, 0, 1, 1, 1, 1, 3, 1, 3, 1, 2, 1, 0, 1, 1, 1, 2, 1, 0, 0, 1, 2, 0, 3, 1, 2, 1, 0, 3 ]
[ "nonn", "base" ]
A152195
[ 1, 2, 4, 1, 8, 4, 16, 11, 1, 32, 26, 6, 64, 57, 22, 1, 128, 120, 64, 8, 256, 247, 163, 37, 1, 512, 502, 382, 130, 10, 1024, 1013, 848, 386, 56, 1, 2048, 2036, 1816, 1024, 232, 12, 4096, 4083, 3797, 2510, 794, 79, 1 ]
[ "nonn", "tabl" ]
A218957
[ 1, 1, 1, 4, 11, 51, 241, 1506, 9649, 80281, 640741, 6196576, 66883411, 775421219 ]
[ "nonn", "more" ]
A337212
[ 1, 8, 13, 26, 104, 728, 364, 80, 91, 8744, 3851, 3280, 59048, 4782968, 7174453, 3438578, 16139240, 5373368, 5235412, 1678822106, 86049704, 387420488, 47071589413, 140633637386, 2952400, 728, 757, 9526168288, 7312949144072, 49566102697280, 24477226494760 ]
[ "nonn" ]
A202485
[ 108, 324, 1170, 4225, 14560, 50176, 174720, 608400, 2113020, 7338681, 25513362, 88698724, 308204050, 1070925625, 3722206950, 12937242564, 44959937760, 156246278400, 543023015040, 1887238517824, 6558819027904, 22794207851584 ]
[ "nonn" ]
A375348
[ 1, 1, 2, 6, -1, -1, -1, -1, -1, 8, 8, 9, 0, 2, -1, -1, 8, -1, 7, -1, -1, -1, 7, 8, 3, 1, 6, 8, -1, -1, 8, 2, 3, 8, 9, -1, 9, -1, 0, 8, 1, -1, -1, 3, 8, 6, -1, 1, 7, 2, 6, -1, 8, 3, -1, 5, 4, 2, -1, 8, 4, 0, 2, 6, -1, 2, 4, 6, 1, 2, 8, 8, 8, 0, 2, 4, -1, 8, 2, 1, 5, 7, 4, -1, 1, 0 ]
[ "base", "sign" ]
A124798
[ 1, 0, 1, 1, 2, 3, 3, 1, 0, 2, 2, 2, 2, 3, 5, 5, 5, 5, 2, 0, 3, 3, 3, 3, 3, 3, 4, 7, 7, 7, 7, 7, 7, 3, 0, 4, 4, 4, 4, 4, 4, 4, 4, 5, 9, 9, 9, 9, 9, 9, 9, 9, 4, 0, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 0, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 13, 13, 13, 13, 13, 13 ]
[ "base", "easy", "nonn" ]
A016336
[ 1, -1, 0, 0, 0, 1, -1, 0, 0, 0, 1, -1, 0, 0, 0, 1, -1, 0, 0, 0, 1, -1, 0, 0, 0, 1, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 0, 1, 0, -1, 0, 1, 0, 0, -1, 0, 1, 0, 0, -1, 0, 1, 0, 0, -1, 0, 1, 0, 0, -1, 0, 1, 0, 0, -1, 0, 1, 0, 0, -1, 1, 0, 0, 0, -1, 1 ]
[ "sign", "fini", "full" ]
A017455
[ 78125, 268435456, 10460353203, 114415582592, 678223072849, 2799360000000, 9095120158391, 24928547056768, 60170087060757, 131593177923584, 266001988046875, 504189521813376, 905824306333433, 1555363874947072, 2569093262823519, 4103386730000000, 6364290927201661, 9618527719784448 ]
[ "nonn", "easy" ]
A347428
[ 1, 1, 4, 4, 14, 14, 40, 40, 106, 106, 254, 254, 582, 582, 1256, 1256, 2620, 2620, 5256, 5256, 10266, 10266, 19482, 19482, 36204, 36204, 65792, 65792, 117496, 117496, 206120, 206120, 356320, 356320, 606912, 606912, 1020848, 1020848, 1695676, 1695676, 2786010 ]
[ "nonn" ]
A365134
[ 1, 3, 18, 130, 1041, 8889, 79310, 730593, 6895575, 66337179, 648087750, 6412437474, 64125877361, 647102364990, 6581050832082, 67384499298690, 694077333315363, 7186898222178342, 74767377019254450, 781105293655408500, 8191332027277068000 ]
[ "nonn" ]
A257830
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 34, 79, 215, 437, 2514, 3833, 32453, 35194, 49672, 5695449, 357129525, 44683966971145540, 383375167535817150, 4.377829714163337e+24 ]
[ "base", "nonn" ]
A059626
[ 0, 3, 6, 9, 2, 5, 8, 1, 4, 7, 30, 33, 36, 39, 32, 35, 38, 31, 34, 37, 60, 63, 66, 69, 62, 65, 68, 61, 64, 67, 90, 93, 96, 99, 92, 95, 98, 91, 94, 97, 20, 23, 26, 29, 22, 25, 28, 21, 24, 27, 50, 53, 56, 59, 52, 55, 58, 51, 54, 57, 80, 83, 86, 89, 82, 85, 88, 81, 84, 87, 10, 13 ]
[ "nonn", "base" ]
A155927
[ 1, 1, -2, 19, -379, 12726, -641465, 45181627, -4232016719, 508271819428, -76108505872794, 13896010073569130, -3038043685025189000, 783439451518414500000, -2.3528986024942023e+23 ]
[ "sign" ]
A170241
[ 1, 40, 1560, 60840, 2372760, 92537640, 3608967960, 140749750440, 5489240267160, 214080370419240, 8349134446350360, 325616243407664060, 12699033492898898000, 495262306223057000000, 1.9315229942699222e+22 ]
[ "nonn" ]
A208104
[ 9, 81, 169, 361, 841, 2025, 5041, 12769, 32761, 84681, 219961, 573049, 1495729, 3908529, 10220809, 26739241, 69973225, 183142089, 479391025, 1254930625, 3285238489, 8600522121, 22515902809, 58946498521, 154322479921, 404019140625 ]
[ "nonn" ]
A105221
[ 0, 0, 0, 2, 0, 5, 0, 2, 3, 7, 0, 5, 0, 9, 8, 2, 0, 5, 0, 7, 10, 13, 0, 5, 5, 15, 3, 9, 0, 10, 0, 2, 14, 19, 12, 5, 0, 21, 16, 7, 0, 12, 0, 13, 8, 25, 0, 5, 7, 7, 20, 15, 0, 5, 16, 9, 22, 31, 0, 10, 0, 33, 10, 2, 18, 16, 0, 19, 26, 14, 0, 5, 0, 39, 8, 21, 18, 18, 0, 7, 3, 43, 0, 12, 22, 45 ]
[ "easy", "nonn" ]
A278136
[ 1, 2, 1, 3, 1, 5, 2, 1, 8, 4, 1, 13, 6, 2, 1, 21, 10, 5, 1, 34, 17, 7, 2, 1, 55, 27, 12, 6, 1, 89, 44, 22, 8, 2, 1, 144, 72, 34, 14, 7, 1, 233, 116, 56, 28, 9, 2, 1, 377, 188, 94, 42, 16, 8, 1, 610, 305, 150, 70, 35, 10, 2, 1, 987, 493, 244, 122, 51, 18, 9, 1 ]
[ "nonn", "tabf" ]
A361065
[ 1, 1, 7, 85, 1521, 36421, 1097743, 39968601, 1707558401, 83777885929, 4643185678551, 286930307457949, 19562851003118830, 1458832806486727700, 118121195050068080000, 1.0320576944751956e+22, 9.678637756587343e+23, 9.697088081917588e+25 ]
[ "nonn" ]
A249008
[ 1546, 41084, 973204, 11810564, 105819690, 589354152, 2869206494, 10716918348, 36428481062, 108634995458, 299997171280, 746679315998, 1771285007396, 3889902082248, 8233803171560, 16491148207236, 31949943270148 ]
[ "nonn" ]
A073962
[ 0, 0, 0, 0, 40, 240, 1120, 4608, 17536, 65280 ]
[ "dead" ]
A200221
[ 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 3, 0, 0, 0, 3, 0, 3, 0, 3, 0, 0, 0, 9, 0, 0, 1, 3, 0, 6, 0, 6, 0, 0, 0, 12, 0, 0, 0, 9, 0, 6, 0, 3, 3, 0, 0, 18, 0, 3, 0, 3, 0, 9, 0, 9, 0, 0, 0, 21, 0, 0, 3, 10, 0, 6, 0, 3, 0, 6, 0, 27, 0, 0, 3, 3, 0, 6, 0, 18, 3, 0, 0, 21 ]
[ "nonn" ]
A204767
[ 0, 0, 3, 3, 14, 7, 17, 20, 78, 26, 55, 87, 252, 63, 129, 264, 620, 124, 251, 635, 1290, 215, 433, 1308, 2394, 342, 687, 2415, 4088, 511, 1025, 4112, 6552, 728, 1459, 6579, 9990, 999, 2001, 10020, 14630, 1330, 2663, 14663, 20724, 1727, 3457, 20760, 28548, 2196, 4395, 28587 ]
[ "nonn", "easy" ]
A034556
[ 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, 8, 31, 120, 348, 1013, 2676, 7020, 17694, 44400, 109543, 269501, 657778, 1601335, 3878363, 9360643, 22480153, 53735252, 127728332, 301884793, 709077121 ]
[ "nonn" ]
A074044
[ 1, 2, 3, 4, 5, 6, 7, 8, 9, 5, 11, 12, 13, 7, 15, 16, 17, 18, 19, 5, 7, 11, 23, 24, 25, 13, 27, 7, 29, 30, 31, 32, 11, 17, 35, 36, 37, 19, 13, 8, 41, 7, 43, 11, 45, 23, 47, 48, 49, 25, 17, 13, 53, 54, 11, 8, 19, 29, 59, 60, 61, 31, 9, 64, 13, 11, 67, 17, 23, 35, 71, 72 ]
[ "nonn" ]
A126119
[ 1, 5, 27, 195, 1785, 19845, 259875, 3918915, 66891825, 1274998725, 26843892075, 618718975875, 15495473018025, 419010239773125, 12167108660581876, 377607284571391900, 12473420957563191000, 436953531082636700000, 1.6179945969799083e+22, 6.314611790131176e+23 ]
[ "nonn", "frac" ]
A056791
[ 1, 2, 3, 4, 4, 5, 5, 6, 5, 6, 6, 7, 6, 7, 7, 8, 6, 7, 7, 8, 7, 8, 8, 9, 7, 8, 8, 9, 8, 9, 9, 10, 7, 8, 8, 9, 8, 9, 9, 10, 8, 9, 9, 10, 9, 10, 10, 11, 8, 9, 9, 10, 9, 10, 10, 11, 9, 10, 10, 11, 10, 11, 11, 12, 8, 9, 9, 10, 9, 10, 10, 11, 9, 10, 10, 11, 10, 11, 11, 12, 9, 10, 10, 11, 10, 11, 11 ]
[ "nonn", "easy", "base" ]
A218553
[ 6, 10, 30, 42 ]
[ "hard", "more", "nonn" ]
A220424
[ 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 1, 1, 1, 1, 2, 2, 1, 3, 1, 2, 2, 2, 1, 1, 3, 1, 1, 1, 2, 3, 1, 2, 3, 1, 1, 1, 1, 2, 2, 1, 3, 1, 1, 1, 2, 1, 3, 1, 1, 3, 1, 1, 2, 2, 1, 1, 3, 1, 1, 3, 2, 1, 1, 1, 3, 1, 1, 2, 3, 1, 1, 2, 2, 2, 1, 2, 3, 1, 1, 2, 3, 1, 2 ]
[ "nonn", "base", "tabf" ]
A012905
[ 0, 2, -1, -5, 18, 171, -1545, -10782, 239988, 1096641, -62140365, -24333498, 23204064114, -125220001599, -11614731493365, 159067996590888, 7270653671958600, -190675584788792100, -5297005049241976000 ]
[ "sign" ]
A067742
[ 1, 1, 0, 1, 0, 2, 0, 1, 1, 0, 0, 2, 0, 0, 2, 1, 0, 1, 0, 2, 0, 0, 0, 2, 1, 0, 0, 2, 0, 2, 0, 1, 0, 0, 2, 1, 0, 0, 0, 2, 0, 2, 0, 0, 2, 0, 0, 2, 1, 1, 0, 0, 0, 2, 0, 2, 0, 0, 0, 2, 0, 0, 2, 1, 0, 2, 0, 0, 0, 2, 0, 3, 0, 0, 0, 0, 2, 0, 0, 2, 1, 0, 0, 2, 0, 0, 0, 2, 0, 2, 2, 0, 0, 0, 0, 2, 0, 1, 2, 1, 0, 0, 0, 2, 0 ]
[ "easy", "nonn" ]
A273786
[ 5, 7, 8, 9, 10, 13, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 37, 38, 40, 41, 42, 43, 44, 45, 46, 48, 49, 50, 51, 53, 54, 55, 57, 60, 61, 62, 63, 64, 65, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 85, 89, 91, 93, 94 ]
[ "nonn" ]
A050418
[ 2, 3, 4, 5, 6, 8, 9, 11, 13, 15, 17, 18, 20, 22, 24, 26, 28, 30, 33, 36, 38, 40, 42, 45, 48, 49, 50, 51, 54, 57, 58, 59, 61, 63, 66, 67, 69, 71, 72, 73, 75, 77, 81, 82, 83, 85, 86, 88, 91, 93, 95, 96, 97, 99, 100, 103, 104, 106, 108, 110 ]
[ "nonn" ]
A297596
[ 1, 9, 25, 49, 145, 443, 1141, 3009, 8455, 23151, 62211, 169651, 464469, 1262947, 3434407, 9364725, 25517397, 69467533, 189209921, 515479315, 1403998341, 3823905513, 10415880295, 28371283095, 77275911315, 210482481315 ]
[ "nonn" ]
A170382
[ 1, 37, 1332, 47952, 1726272, 62145792, 2237248512, 80540946432, 2899474071552, 104381066575872, 3757718396731392, 135277862282330110, 4870003042163884000, 175320109517899830000, 6.311523942644394e+21 ]
[ "nonn" ]
A228027
[ 13, 73, 1033, 262153, 1073741833, 73786976294838210000, 4.835703278458517e+24 ]
[ "nonn", "easy" ]
A033768
[ 1, 1, 0, 2, 1, 0, 2, 0, 0, 3, 3, 0, 3, 2, 0, 4, 0, 0, 4, 4, 0, 3, 1, 0, 5, 0, 0, 3, 5, 0, 6, 3, 0, 7, 0, 0, 4, 5, 0, 5, 4, 0, 4, 0, 0, 8, 5, 0, 6, 1, 0, 5, 0, 0, 7, 7, 0, 6, 5, 0, 7, 0, 0, 8, 7, 0, 7, 4, 0, 5, 0, 0, 8, 9, 0, 10, 0, 0, 9, 0, 0, 4, 7, 0, 7, 6, 0, 7 ]
[ "nonn" ]
A373266
[ 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 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, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1 ]
[ "nonn" ]
A292151
[ 1, 6, 9, 14, 17, 20, 31, 34 ]
[ "nonn", "fini", "full" ]
A311796
[ 1, 4, 8, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 54, 59, 63, 67, 71, 75, 78, 82, 86, 90, 95, 100, 105, 109, 113, 117, 120, 123, 127, 131, 136, 141, 146, 151, 155, 159, 162, 165, 168, 172, 177, 182, 187, 192, 197, 201, 204 ]
[ "nonn" ]
A073749
[ 1, 1, 1, 3, 3, 5, 11, 19, 7, 39, 39, 37, 243, 451, -149, 845, 237, 1507, -1569, 8599, -7037, 22543, -27921, 45765, -630845, 1283427, -1552973, 4462097, -6470191, 8313975, -43768763, 67084957, -86965863, 247812897, -351911967, 477950179, -5373020297, 7552589095, -10293397313, 29278400177 ]
[ "easy", "frac", "sign" ]
A042046
[ 23, 47, 70, 117, 304, 421, 1146, 1567, 12115, 183292, 378699, 2455486, 12656129, 293546453, 1480388394, 9175876817, 19832142028, 306658007237, 2166438192687, 2473096199924, 7112630592535, 9585726792459 ]
[ "nonn", "cofr", "frac", "easy", "less" ]
A218992
[ 7, 44, 272, 1677, 10335, 63688, 392464, 2418473, 14903303, 91838292, 565933056, 3487436629, 21490552831, 132430753616, 816075074528, 5028881200785, 30989362279239, 190965054876220, 1176779691536560, 7251643204095581 ]
[ "nonn", "easy" ]
A343264
[ 1, 2, 4, 9, 21, 50, 119, 281, 656, 1513, 3449, 7777, 17363, 38422, 84355, 183915, 398526, 858901 ]
[ "nonn", "more" ]
A031639
[ 32449, 52981, 54370, 80777, 110393, 150769, 151546, 191258, 192133, 236557, 238505, 242425, 289885, 296377, 348629, 352178, 356938, 407669, 411506, 412789, 414074, 417941, 420529, 479593, 487933, 548441, 554377, 560345, 566345, 629810 ]
[ "nonn" ]
A328250
[ 4, 8, 1, 12, 2, 9, 16, 3, 18, 50, 20, 5, 25, 99, 306, 24, 6, 45, 125, 549, 5831, 27, 7, 49, 207, 1611, 6849, 20230, 28, 10, 63, 343, 2662, 14225, 33026, 52283, 32, 11, 75, 375, 2842, 16299, 47107, 225998, 286891, 36, 13, 90, 531, 2891, 19431, 49806, 1336047, 1292750, 10820131, 40, 14, 98, 686, 4575, 21231, 117649, 1422275, 2886982, 21628098, 38452606 ]
[ "nonn", "tabl" ]
A162150
[ 1, 36, 665, 8400, 81584, 649536, 4413471, 26311884, 140429874, 681294172, 3040682386, 12604874396, 48916205718, 178878544028, 619807366651, 2044561200672, 6447023494362, 19501857519768, 56767942666603 ]
[ "nonn" ]
A099998
[ 4, 9, 25, 32, 49, 81, 121, 128, 169, 216, 243, 289, 343, 400, 484, 529, 625, 729, 841, 961, 1024, 1156, 1296, 1369, 1521, 1681, 1764, 1936, 2048, 2187, 2209, 2401, 2601, 2744, 2916, 3125, 3249, 3375, 3600, 3844, 4096, 4356, 4624, 4900, 5041, 5329, 5625, 5832 ]
[ "nonn", "easy" ]
A258855
[ 0, 0, 0, 0, 4, 0, 4, 4, 208, 208, 1, 0, 512, 4, 20, 32, 2304, 4, 32, 80, 2304, 16, 53, 80, 1188, 80, 32, 3888, 2432, 2, 208, 1, 12288, 80, 2, 4, 916, 208, 7, 2432, 916, 4, 30, 12, 9536, 476, 4, 20, 32512, 424, 32, 116, 4104, 512, 20736, 156, 764, 80, 332, 4 ]
[ "nonn" ]
A159394
[ 168, 120528, 270945024, 288495524152, 178806146442232 ]
[ "nonn" ]
A249158
[ 0, 1, 2, 3, 4, 5, 6, 8, 16, 24, 150, 300, 5952, 7752, 7955, 9755, 9958, 11904, 13704, 13907, 14110, 15707, 15910, 392850, 751043, 4585544, 12737804, 12828748, 16380296, 19289406, 19380350, 20228253, 33115710, 395849700, 1339182534 ]
[ "nonn", "base" ]
A000575
[ 10, 80, 365, 1246, 3535, 8800, 19855, 41470, 81367, 151580, 270270, 464100, 771290, 1245488, 1960610, 3016820, 4547840, 6729800, 9791859, 14028850, 19816225, 27627600, 38055225, 51833730, 69867525, 93262260, 123360780, 161784040, 210477476, 271763360 ]
[ "nonn", "easy" ]
A300864
[ 1, 1, 0, 1, 0, 0, 2, -1, 0, 4, -6, 6, 6, -24, 38, -17, -64, 188, -230, -6, 662, -1432, 1286, 1210, -6362, 10692, -5530, -18274, 57022, -74364, 174, 216703, -489544, 467860, 391258, -2256430, 3948206, -2234064, -6725362, 21920402, -29716570, 2095564, 84595798, -198418242, 197499846 ]
[ "sign" ]
A132161
[ 1, 16, 40, 62, 95, 187, 683, 15838, 3644381 ]
[ "base", "more", "nonn" ]
A182823
[ 1, -1, 1, 1, -3, 1, 1, 6, -6, 1, -13, 4, 21, -10, 1, 49, -129, -5, 55, -15, 1, 31, 723, -624, -85, 120, -21, 1, -1981, -386, 5271, -2009, -385, 231, -28, 1, 14329, -34320, -11978, 25508, -4809, -1204, 406, -36, 1, -2177, 347913, -263862, -112974, 93429, -8757, -3066, 666, -45, 1, -1138879, -701387, 3956751, -1200270, -657735, 278523, -10983, -6810, 1035, -55, 1 ]
[ "sign", "tabl", "look" ]
A097074
[ 1, 1, 5, 9, 21, 41, 85, 169, 341, 681, 1365, 2729, 5461, 10921, 21845, 43689, 87381, 174761, 349525, 699049, 1398101, 2796201, 5592405, 11184809, 22369621, 44739241, 89478485, 178956969, 357913941, 715827881, 1431655765, 2863311529 ]
[ "easy", "nonn" ]
A032651
[ 67, 1011, 1819, 3031, 4041, 4647, 5253, 5455, 6061, 6667, 7677, 8283, 114115, 138139, 144145, 160161, 162163, 178179, 196197, 210211, 214215, 234235, 240241, 246247, 252253, 258259, 264265, 274275, 306307, 312313, 318319, 322323, 358359 ]
[ "nonn", "base" ]
A279689
[ 0, 40, 96, 104, 208, 248, 258, 288, 312, 480, 752, 833, 936, 960, 968, 1170, 1248, 1728, 1755, 2090, 2232, 2400, 2608, 2768, 2808, 2832, 2904, 4224, 4464, 5208, 5280, 5418, 6075, 6584, 6696, 6714, 6720, 6768, 6800, 6966, 7020, 7182, 7200, 7714, 7728, 7776 ]
[ "nonn", "base" ]
A145348
[ 1, 1, 4, 30, 312, 3965, 57824, 933998, 16346728, 305539046, 6037780164, 125227212342, 2711254371568, 61021656441091, 1423063422363676, 34297379607790290, 852463916004336500, 21812807282389352000 ]
[ "nonn" ]
A149498
[ 1, 1, 5, 9, 45, 109, 509, 1517, 6757, 22461, 98997, 345653, 1529269, 5506201, 24429845, 90301037, 400891885, 1513502725, 6723798125, 25795029197, 114713713765, 445819303429, 1984246519061, 7797336046153, 34724021189789, 137746829186609, 613736119949989, 2454296224465553, 10940223238022508 ]
[ "nonn", "walk" ]
A276772
[ 1, 1, 2, 4, 8, 10, 16, 52, 70, 76, 100, 356, 644, 740, 764, 676, 3176, 6376, 8776, 9376, 9496, 5776, 30112, 75112, 113512, 135112, 139432, 140152, 53824, 336848, 933080, 1668080, 2138480, 2350160, 2385440, 2390480 ]
[ "nonn", "tabl" ]
A387570
[ 2, 3, 9, 22, 51, 111, 234, 477, 951, 1858, 3573, 6777, 12706, 23583, 43389, 79214, 143631, 258843, 463914, 827337, 1468827, 2597018, 4574529, 8030037, 14050946, 24514011, 42651729, 74021062, 128157771, 221397543, 381680298, 656721237, 1127890911, 1933765618 ]
[ "nonn", "easy", "changed" ]
A125272
[ 3, 5, 7, 13, 23, 37, 43, 103, 127, 163, 167, 257, 293, 313, 337, 433, 523, 757, 797, 887, 953, 1013, 1063, 1153, 1283, 1303, 1307, 1483, 1597, 1657, 1667, 1693, 1723, 1783, 1913, 2003, 2333, 2347, 2557, 2897, 2927, 3067, 3533, 3823, 3943, 4003, 4013, 4093 ]
[ "nonn", "easy" ]
A245578
[ 1, 10, 18, 22, 32, 38, 50, 58, 72, 82, 98, 110, 128, 142, 162, 178, 200, 218, 242, 262, 288, 310, 338, 362, 392, 418, 450, 478, 512, 542, 578, 610, 648, 682, 722, 758, 800, 838, 882, 922, 968, 1010, 1058, 1102, 1152, 1198, 1250, 1298, 1352, 1402, 1458, 1510, 1568, 1622, 1682, 1738, 1800, 1858, 1922, 1982, 2048, 2110 ]
[ "nonn", "easy" ]
A111460
[ 1, 3, 2, 1, 0, 7, 5, 5, 6, 3, 2, 1, 6, 7, 1, 1, 4, 1, 6, 4, 1, 3, 8, 5, 9, 5, 9, 6, 0, 1, 9, 0, 0, 4, 5, 5, 1, 4, 0, 6, 2, 1, 6, 3, 4, 0, 3, 3, 1, 1, 6, 1, 9, 4, 7, 2, 4, 2, 6, 7, 9, 3, 0, 0, 4, 9, 6, 9, 5, 5, 7, 0, 2, 0, 8, 3, 5, 0, 5, 5, 5, 7, 4, 0, 2, 7, 1, 3, 8, 4, 5, 7, 5, 9, 2, 6, 2, 4, 9, 4 ]
[ "nonn", "cons" ]
A122967
[ 71, 37, 131, 251, 199, 79, 139, 1151, 827, 89, 71, 107, 467, 89, 239, 239, 467, 359, 467, 479, 431, 263, 853, 2267, 433, 251, 1439, 2393, 1367, 47, 863, 449, 1217, 701, 4799, 89, 1879, 433, 1063, 2609, 269, 5669, 239, 2099, 6803, 251, 3923, 199, 929, 227, 5119 ]
[ "nonn" ]
A036344
[ 2, 3, 5, 7, 11, 23, 43, 67, 89, 109, 4567, 10987, 76543, 23456789, 6543211211, 4321121110987, 23456789101112124, 891011121234567900000, 3.211211109876543e+21, 2.3456789101112125e+31, 4.321121110987654e+31, 5.678910111212346e+38 ]
[ "nonn", "base" ]
A135078
[ 1, 1, 4, 46, 1519, 145795, 41134753, 34354750885, 85260288495316, 630102185300832600, 1.388441283904762e+22, 9.129756078958065e+26, 1.7925510834612345e+32 ]
[ "nonn" ]
A345231
[ 5, 4, 6, 8, 5, 5, 9, 5, 5, 2, 8, 0, 4, 7, 4, 4, 6, 6, 8, 4, 5, 5, 1, 7, 1, 0, 0, 9, 9, 0, 7, 6, 1, 7, 8, 9, 9, 1, 0, 2, 1, 0, 4, 8, 5, 9, 2, 9, 7, 4, 2, 9, 4, 7, 8, 2, 8, 6, 8, 9, 3, 7, 1, 4, 9, 9, 3, 5, 1, 4, 8, 6, 2, 7, 3, 9, 1, 5, 5, 1, 7, 1, 5, 2, 7, 6, 8, 7, 1, 6, 0, 0, 2, 3, 7, 8, 3, 1, 0, 3, 2, 8, 7, 9, 8, 8 ]
[ "nonn", "cons" ]
A372191
[ 0, 0, 0, 1, 2, 6, 16, 43, 117, 319, 875, 2409, 6692, 18614, 52099, 146186, 411720, 1162295, 3289994, 9330913, 26517036, 75481622, 215201178, 614398459, 1756392061, 5026955216, 14403488345, 41311616835, 118601561506, 340795908579, 980078195995 ]
[ "nonn" ]