id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A105604
[ 1, 1, 1, 1, 1, 3, 1, 5, 3, 11, 1, 105, 1, 43, 33, 85, 1, 1197, 1, 1705, 129, 683, 1, 23205, 11, 2731, 171, 27305, 1, 2370291, 1, 21845, 2049, 43691, 473, 5679765, 1, 174763, 8193, 5941925, 1, 621456339, 1, 6990505, 622611, 2796203, 1, 1437248085, 43, 346729141, 131073, 111848105, 1, 22861753173, 7513, 1521134245 ]
[ "easy", "nonn" ]
A076439
[ 29, 43, 52, 59, 173, 181, 263, 283, 317, 332, 347, 349, 361, 379, 383, 419, 428, 436, 461, 467, 479, 484, 491, 509, 523, 529, 569, 571, 607, 613, 619, 641, 643, 653, 661, 677, 691, 709, 733, 773, 787, 788, 811, 827, 839, 853, 877, 881, 883, 907, 911, 941 ]
[ "hard", "nonn" ]
A383414
[ 7, 28, 15, 112, 60, 23, 448, 240, 92, 31, 1792, 960, 368, 124, 39, 7168, 3840, 1472, 496, 156, 47, 28672, 15360, 5888, 1984, 624, 188, 55, 114688, 61440, 23552, 7936, 2496, 752, 220, 63, 458752, 245760, 94208, 31744, 9984, 3008, 880, 252, 71, 1835008, 983040, 376832, 126976, 39936, 12032, 3520, 1008, 284, 79 ]
[ "nonn", "easy", "tabl" ]
A298513
[ 5, 4, 6, 3, 7, 2, 3, 3, 4, 7, 7, 9, 8, 8, 8, 4, 5, 2, 8, 6, 5, 8, 4, 4, 0, 5, 5, 1, 8, 6, 1, 6, 4, 7, 8, 8, 0, 2, 8, 7, 5, 4, 7, 7, 9, 2, 0, 6, 8, 8, 0, 6, 2, 4, 5, 6, 6, 9, 2, 0, 5, 5, 4, 4, 7, 9, 0, 6, 9, 2, 2, 8, 3, 4, 9, 9, 3, 9, 6, 5, 3, 4, 1, 0, 6, 2 ]
[ "nonn", "easy", "cons" ]
A206496
[ 1, 1, 1, 1, 1, 3, 1, 1, 3, 4, 1, 6, 3, 4, 10, 1, 1, 15, 1, 10, 10, 5, 3, 10, 10, 15, 15, 10, 4, 60, 1, 1, 15, 5, 20, 45, 6, 5, 45, 20, 3, 60, 4, 15, 105, 18, 10, 15, 10, 70, 15, 45, 1, 105, 35, 20, 15, 24, 1, 210, 15, 6, 105, 1, 105, 105, 1, 15, 63, 140 ]
[ "nonn" ]
A176342
[ 1, 1, 2, 4, 2, 6, 4, 4, 10, 4, 12, 6, 8, 16, 6, 18, 8, 12, 10, 22, 12, 18, 12, 28, 30, 16, 20, 16, 24, 36, 18, 24, 40, 42, 20, 24, 22, 46, 16, 20, 32, 24, 52, 40, 36, 28, 58, 16, 60, 30, 36, 48, 66, 32, 44, 70, 24, 72, 36, 40, 36, 60, 78, 32, 40, 82, 24, 64, 42, 56, 88, 24, 72, 44 ]
[ "nonn" ]
A141687
[ 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0 ]
[ "nonn", "tabl" ]
A356988
[ 1, 1, 2, 3, 3, 4, 5, 5, 6, 7, 8, 8, 8, 9, 10, 11, 12, 13, 13, 13, 13, 14, 15, 16, 17, 18, 19, 20, 21, 21, 21, 21, 21, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 34, 34, 34, 34, 34, 34, 34, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 55, 55, 55, 55, 55 ]
[ "nonn", "easy" ]
A150491
[ 1, 2, 7, 25, 100, 416, 1798, 7954, 35848, 163889, 757613, 3534070, 16606644, 78512097, 373082494, 1780537043, 8529153352, 40987209812, 197514653523, 954133743905, 4619062201883, 22404122173670, 108853541874327, 529689869626406, 2581069902609028, 12592741664790958, 61508342794636824, 300744674043060160 ]
[ "nonn", "walk" ]
A070345
[ 1, 3, 9, 27, 11, 33, 29, 17, 16, 13, 4, 12, 1, 3, 9, 27, 11, 33, 29, 17, 16, 13, 4, 12, 1, 3, 9, 27, 11, 33, 29, 17, 16, 13, 4, 12, 1, 3, 9, 27, 11, 33, 29, 17, 16, 13, 4, 12, 1, 3, 9, 27, 11, 33, 29, 17, 16, 13, 4, 12, 1, 3, 9, 27, 11, 33, 29, 17, 16, 13, 4, 12 ]
[ "nonn", "easy" ]
A280749
[ 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 2, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 2, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 3, 0, 0, 0, 2, 0, 2, 0, 2, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 2, 0, 0, 0, 1, 0, 1, 0, 2, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 3, 0, 0, 0, 2, 0, 0, 0, 2, 0, 2, 0, 2 ]
[ "nonn" ]
A034023
[ 4, 8, 9, 16, 18, 20, 25, 32, 36, 40, 45, 49, 50, 52, 64, 68, 72, 80, 81, 90, 98, 100, 104, 116, 117, 121, 125, 128, 136, 144, 148, 153, 160, 162, 164, 169, 180, 196, 200, 208, 212, 225, 232, 234, 242, 244, 245, 250, 256, 260, 261, 272, 288, 289 ]
[ "nonn" ]
A042099
[ 1, 1, 15, 16, 751, 767, 11489, 12256, 575265, 587521, 8800559, 9388080, 440652239, 450040319, 6741216705, 7191257024, 337539039809, 344730296833, 5163763195471, 5508493492304, 258554463841455, 264062957333759, 3955435866514081, 4219498823847840 ]
[ "nonn", "frac", "easy" ]
A093459
[ 1, 2, 24, 720, 40320, 362880, 39916800, 6227020800 ]
[ "fini", "full", "less", "nonn" ]
A305600
[ 1, -1, -2, 10, -25, 33, 57, -561, 2310, -7150, 18448, -39168, 55114, 41990, -726750, 3657006, -13846041, 44907185, -130605450, 347227650, -845335695, 1842623895, -3311675445, 3271798125, 9143639100, -77910795756, 356581496251, -1331363100907, 4430526577054, -13595755404934, 39119816049161, -106498829726801, 275433122695473, -676162020887697, 1563087628000497, -3329539580829865, 6175049600047825 ]
[ "sign" ]
A324631
[ 15, 31, 60, 113, 215, 406, 763, 1431, 2676, 4993, 9299, 17290, 32103, 59535, 110292, 204137, 377535, 697742, 1288763, 2379167, 4390148, 8097681, 14931075, 27522586, 50719103, 93444207, 172125100, 316999057, 583718215, 1074702870, 1978430491, 3641722423 ]
[ "nonn", "easy" ]
A371357
[ 1, 2, 12, 40, 560, 2016, 14784, 54912, 1647360, 6223360, 47297536, 180590592, 2769055744, 10650214400, 82158796800, 317680680960, 19696202219520, 76467608616960, 594748067020800, 2316387208396800, 36135640450990080, 141101072237199360, 1103153837490831400 ]
[ "nonn" ]
A297327
[ 6434041, 89002225, 865125625, 89610625, 353440516, 29160156025, 18989880481, 37434450625, 72399370000, 444515646025, 346008660625, 2003915162500, 9475360381201, 166729268761, 13110591519025, 8007417968121, 11201866562500, 3095696620900, 61956758281561 ]
[ "nonn" ]
A368847
[ 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 3, 1, 1, 0, 0, 1, 1, 17, 1, 1, 0, 0, 691, 691, 59, 41, 5, 1, 0, 0, 14, 2, 359, 8, 4, 1, 1, 0, 0, 3617, 10851, 1237, 217, 293, 1, 7, 1, 0, 0, 43867, 43867, 750167, 6583, 943, 1129, 217, 2, 1, 0, 0, 1222277, 174611, 627073, 1540967, 28399, 53, 47, 23, 1, 1 ]
[ "nonn", "frac", "tabl" ]
A054277
[ 3, 7, 28, 85, 89, 95, 109, 121, 123, 126, 161, 191, 196, 198, 201, 202, 209, 218, 224, 233, 244, 260, 267, 268, 284, 304, 310, 319, 322, 356, 357, 371, 396, 398, 400, 408, 414, 416, 428, 429, 430, 484, 500, 506 ]
[ "nonn", "base" ]
A071299
[ 1, 1, 1, 1, 3, 6, 10, 60, 420, 672, 10080, 100800, 123200, 4435200, 295680, 62092800, 310464000, 1655808000, 84446208000, 304006348800, 28880603136000, 192537354240000, 4043284439040000, 88952257658880000, 409180385230848000 ]
[ "nonn", "easy", "frac" ]
A256525
[ 1, 3, 10, 23, 47, 84, 141, 221, 333, 480, 674, 918, 1226, 1602, 2062, 2611, 3266, 4033, 4932, 5969, 7166, 8529, 10083, 11835, 13811, 16019, 18487, 21224, 24260, 27604, 31289, 35324, 39744, 44559, 49806, 55496, 61667, 68331, 75529, 83273, 91606, 100540 ]
[ "nonn", "easy" ]
A018235
[ 1, 0, 0, 0, 0, 0, 12144, 61824, 195063, 1133440, 1445136, 4080384, 2921232, 4080384, 1445136, 1133440, 195063, 61824, 12144, 0, 0, 0, 0, 0, 1 ]
[ "nonn", "fini", "full" ]
A043347
[ 23, 571, 11317, 1923293, 13741434753, 5961677173798, 38997101103107110, 1131271311371391500, 5.115716316717318e+22, 1.9319719921122323e+28, 1.2512572632692712e+30 ]
[ "nonn", "base" ]
A033040
[ 1, 3, 5, 7, 9, 11, 13, 16, 18, 20, 22, 24, 26, 28, 46, 48, 50, 52, 54, 56, 58, 76, 78, 80, 82, 84, 86, 88, 106, 108, 110, 112, 114, 116, 118, 136, 138, 140, 142, 144, 146, 148, 166, 168, 170, 172, 174, 176, 178, 196, 198, 200, 202, 204 ]
[ "nonn", "base" ]
A011147
[ 2, 2, 8, 2, 8, 5, 5, 0, 5, 5, 7, 0, 1, 6, 2, 8, 9, 8, 2, 1, 4, 5, 3, 7, 9, 4, 7, 7, 5, 4, 7, 9, 6, 3, 0, 2, 2, 3, 4, 0, 7, 1, 5, 7, 3, 8, 5, 1, 1, 6, 3, 3, 2, 6, 8, 0, 3, 1, 3, 4, 7, 2, 0, 6, 6, 9, 2, 0, 1, 6, 0, 3, 5, 5, 0, 4, 4, 7, 9, 3, 0, 4, 9, 3, 4, 5, 8, 8, 8, 3, 9, 5, 4, 2, 6, 9, 6, 0, 8 ]
[ "nonn", "cons" ]
A031096
[ 8, 25, 43, 61, 79, 97, 115, 133, 136, 138, 140, 142, 144, 146, 148, 150, 151, 152, 177, 204, 231, 258, 285, 312, 339, 366, 370, 373, 376, 379, 382, 385, 388, 391, 393, 394, 420, 447, 474, 501, 528, 555, 582, 609, 613, 616, 619 ]
[ "nonn" ]
A284143
[ 1, 3, 5, 13, 17, 59, 81, 219, 257, 899, 1349, 3429, 4357, 15245, 20801, 56163, 65541, 229389, 344081, 876563, 1114133, 3899421, 5324841, 14377007, 16781431, 58734755, 88085989, 224409287, 285214731, 998251529, 1363159053, 3678415891, 4299186709, 15038714647 ]
[ "nonn", "easy" ]
A048033
[ 0, 0, 0, 0, 0, 0, 0, 0, 35, 56, 84, 252, 360, 495, 1452, 2244, 3432, 11440, 18655, 29575, 86905, 139960, 220150, 617610, 1007216, 1616615, 4563344, 7573970, 12359690, 34220634, 57059772, 93595740, 254222289, 425926604, 703601510 ]
[ "nonn" ]
A378376
[ 1, 2, 4, 8, 3, 6, 11, 22, 43, 15, 29, 10, 20, 7, 14, 5, 9, 18, 35, 13, 23, 46, 91, 31, 61, 21, 41, 81, 161, 55, 109, 37, 73, 25, 49, 17, 33, 65, 129, 257, 87, 173, 341, 117, 225, 455, 153, 305, 607, 209, 405, 809, 273, 543, 185, 369, 721, 1433, 481, 961, 321 ]
[ "nonn" ]
A163088
[ 1, 1, 1, 1, 2, 1, 12, 1, 12, 6, 60, 1, 1440, 1, 280, 180, 840, 1, 151200, 1, 90720, 840, 5544, 1, 93139200, 30, 24024, 3780, 5765760, 1, 93405312000, 1, 10810800, 16632, 437580, 4200, 40755851136000, 1, 1847560, 72072, 1173274502400 ]
[ "nonn" ]
A120980
[ 1, 1, -2, 9, -68, 740, -10554, 185906, -3891320, 94259952, -2592071760, 79748398752, -2713685928744, 101184283477680, -4102325527316184, 179674073609647070, -8454031849605513000, 425281651659459300000, -2.2777115050468597e+22 ]
[ "sign" ]
A221409
[ 1, 1, 1, 3, 16, 117, 1185, 16856, 334597, 9263497, 360493767, 19836684505, 1547142671748, 171456480498151, 27060184630906510, 6089195353964498000, 1.9555505472393828e+21, 8.972324697075138e+23, 5.885052597875075e+26, 5.52133036731399e+29 ]
[ "nonn" ]
A210566
[ 2, 3, 5, 7, 23, 37, 53, 101, 103, 131, 149, 151, 167, 181, 229, 257, 263, 277, 293, 311, 359, 373, 389, 421, 439, 487, 503, 599, 613, 631, 641, 643, 647, 661, 677, 727, 743, 757, 769, 773, 821, 823, 853, 887, 919, 983, 997, 1013, 1031, 1061, 1063 ]
[ "nonn", "base" ]
A076582
[ 2016, 3240, 8256, 32896, 41328, 41616, 51040, 51360, 52650, 73536, 79800, 97020, 100128, 115440, 122760, 145530, 157080, 161028, 166176, 185136, 205120, 210276, 225456, 228150, 247456, 259560, 266085, 319600, 345696, 372816, 430128, 437580 ]
[ "base", "easy", "nonn" ]
A263734
[ 1, 2, 6, 14, 38, 127, 411, 1492, 6478, 16569, 26714, 32419, 28271, 19822, 26194, 21825, 61756, 167557, 269128, 684505, 1646199, 2297701, 5371683, 12445190, 15704962, 36417522, 84084514, 108161867, 272815418, 649512633, 876925811, 2171593912 ]
[ "nonn" ]
A124862
[ 1, 6, 66, 860, 11970, 172116, 2523444, 37487736, 562303170, 8496977060, 129153866556, 1972531074696, 30245473774516, 465314970745800, 7179145222818600, 111037445957810160, 1721080411744977200 ]
[ "easy", "nonn" ]
A069198
[ 1, 6, 7, 13, 10, 23, 11, 17, 14, 31, 15, 23, 19, 14, 11, 25, 12, 37, 49, 43, 46, 89, 45, 67, 56, 41, 97, 46, 143, 63, 103, 83, 62, 145, 69, 107, 88, 65, 51, 58, 109, 167, 92, 259, 117, 188, 305, 493, 266, 253, 173, 142, 105, 247, 176, 141, 317, 229, 182, 137, 319 ]
[ "easy", "nonn" ]
A277786
[ 0, 3090, 309612, 137510661, 42007318111, 13899171401510, 4515609963711003, 1473737617518590500, 480374435720722250000, 1.5663867214503635e+23, 5.107056423400469e+25, 1.6651612907609136e+28 ]
[ "nonn" ]
A029750
[ 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 448, 512, 640, 768, 896, 1024, 1280, 1536, 1792, 2048, 2560, 3072, 3584, 4096, 5120, 6144, 7168, 8192, 10240 ]
[ "nonn", "easy" ]
A256406
[ 3, 198, 270, 570, 522, 600, 822, 882, 1062, 2130, 1950, 2592, 2268, 2310, 3168, 2970, 5502, 6702, 5022, 7350, 10038, 10428, 10500, 9438, 14562, 14010, 15288, 17028, 18060, 19698, 17958, 19890, 18522, 20772, 29670, 20550, 22158, 16650 ]
[ "nonn" ]
A220594
[ 1, 3265, 1250507, 702811381, 353961472626, 182840438017294, 93925801702787500, 48312654881049640000, 2.4842927169574265e+22, 1.2775438144927996e+25, 6.569640758436558e+27, 3.378384877381292e+30 ]
[ "nonn" ]
A188467
[ 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1 ]
[ "nonn" ]
A049303
[ 2, 5, 6, 7, 9, 19, 25, 32, 34, 36, 41, 54, 55, 56, 59, 62, 64, 67, 69, 70, 71, 75, 80, 81, 82, 84, 86, 87, 89, 92, 93, 95, 96, 111, 115, 125, 128, 140, 163, 166, 177, 178, 189, 192, 205, 212, 219, 221, 226, 233, 236, 242, 258, 259, 267, 294, 303, 309, 323, 327, 329 ]
[ "nonn", "base", "easy" ]
A370919
[ 5, 15, 17, 23, 45, 47, 50, 51, 53, 59, 69, 71, 77, 135, 137, 140, 141, 143, 150, 152, 153, 155, 158, 159, 161, 167, 177, 179, 185, 207, 209, 212, 213, 215, 221, 231, 233, 239, 405, 407, 410, 411, 413, 420, 422, 423, 425, 428, 429, 431, 450, 452, 455, 456 ]
[ "nonn", "base" ]
A195176
[ 0, 2, 4, 5, 7, 8, 10, 12, 13, 15, 16, 18, 20, 21, 23, 24, 26, 27, 29, 31, 32, 34, 35, 37, 39, 40, 42, 43, 45, 46, 48, 50, 51, 53, 54, 56, 58, 59, 61, 62, 64, 66, 67, 69, 70, 72, 73, 75, 77, 78, 80, 81, 83, 85, 86, 88, 89, 91, 92, 94, 96, 97, 99, 100, 102, 104, 105 ]
[ "nonn" ]
A126874
[ 0, 1, 3, 8, 19, 46, 106, 247 ]
[ "nonn" ]
A263105
[ 1, 33, 2916, 808300, 509131545, 605707523361, 1214620662420928, 3795417851074101000, 1.7444500147778708e+22, 1.1282381563139344e+26, 9.913770880268969e+29, 1.150224856987346e+34 ]
[ "nonn", "walk" ]
A287091
[ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5 ]
[ "nonn" ]
A021025
[ 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7, 6, 1, 9, 0, 4, 7 ]
[ "nonn", "cons", "easy" ]
A230134
[ 1, 1, 6, 41, 456, 6301, 108576, 2207981, 52012416, 1390239481, 41593598976, 1376769180401, 49955931795456, 1971671764875541, 84095262825824260, 3854514200269775000, 188942180401957500000, 9.863099585213327e+21, 5.46266997049408e+23, 3.1993839349571174e+25 ]
[ "nonn" ]
A032807
[ 2, 3, 16, 17, 23, 24, 114, 115, 121, 122, 163, 164, 170, 171, 800, 801, 807, 808, 849, 850, 856, 857, 1143, 1144, 1150, 1151, 1192, 1193, 1199, 1200, 5602, 5603, 5609, 5610, 5651, 5652, 5658, 5659, 5945, 5946, 5952, 5953 ]
[ "nonn", "base", "easy" ]
A195357
[ 1, 9, 7, 2, 0, 4, 8, 2, 9, 8, 2, 7, 2, 6, 9, 0, 4, 1, 3, 9, 8, 0, 2, 1, 9, 5, 1, 2, 0, 2, 5, 7, 0, 8, 4, 0, 3, 2, 8, 4, 5, 8, 8, 4, 3, 0, 7, 8, 5, 1, 4, 3, 9, 5, 8, 2, 9, 8, 4, 2, 7, 8, 8, 5, 5, 2, 7, 7, 2, 8, 7, 6, 0, 2, 4, 8, 3, 1, 0, 9, 9, 8, 6, 6, 3, 5, 8, 8, 8, 2, 0, 5, 4, 4, 2, 7, 5, 8, 5, 5 ]
[ "nonn", "cons" ]
A329514
[ 1, 3, 6, 9, 12, 15, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12 ]
[ "nonn", "easy" ]
A147404
[ 1, 1, 1, 5, 1, 9, 13, 53, 137, 741, 2493, 19441, 73321, 1016967, 4911015, 87040405, 643897713 ]
[ "nonn" ]
A359022
[ 1, 1, 9, 21, 115, 521, 1494, 15129, 83609, 459957, 2551794, 14150081, 78597739 ]
[ "nonn", "more" ]
A343161
[ 1, 1, 1, 2, 3, 5, 8, 14, 24, 42, 72, 127, 221, 390, 684, 1207, 2125, 3753, 6620, 11698, 20659, 36518, 64533, 114099, 201707, 356683, 630693, 1115370, 1972469, 3488489, 6169656, 10912003, 19299555, 34135099, 60374747, 106786342, 188875933, 334072759, 590889162, 1045136443 ]
[ "nonn" ]
A372425
[ 1, 1, 6, 21, 315, 1085, 117180, 3720465, 105413175, 1539032355, 107487974, 34654391537535, 47303244448735270, 55351553611370095000, 3.808186888462262e+21, 7.18795275197252e+22, 9.236519286284688e+25, 1.345155354858467e+30, 9.660905758593511e+33 ]
[ "nonn", "frac" ]
A285611
[ 1, 2, 2, 4, 12, 24, 56, 112, 240, 480, 992, 960, 1984, 3968, 16256, 16128, 32512, 130560, 261632, 523264, 1047552, 2095104, 4192256, 8384512, 16773120, 33546240, 8380416, 16760832, 67092480, 335511552, 671055872, 1073676288, 2113863680, 8522694656 ]
[ "nonn", "easy" ]
A076292
[ 1, 4, 8, 9, 16, 25, 27, 32, 36, 49, 64, 81, 100, 121, 125, 128, 169, 196, 216, 225, 243, 256, 289, 343, 361, 441, 484, 512, 529, 625, 676, 729, 841, 900, 961, 1000, 1024, 1089, 1156, 1225, 1296, 1331, 1369, 1444, 1521, 1681, 1764, 1849, 2048, 2116, 2187 ]
[ "nonn" ]
A353839
[ 12, 40, 60, 63, 84, 112, 120, 126, 132, 144, 156, 204, 228, 252, 276, 280, 300, 315, 325, 336, 348, 351, 352, 360, 372, 420, 440, 444, 492, 504, 516, 520, 560, 564, 588, 630, 636, 650, 660, 675, 680, 693, 702, 708, 720, 732, 760, 780, 804, 819, 832, 840, 852 ]
[ "nonn" ]
A358810
[ 5, 16810, 10609215, 4381392020, 1562500000000, 522217835532030, 168437773747672830, 53095647535975150000, 1.6463182598208445e+22, 5.0404395008e+24, 1.527650417538031e+27, 4.5916023571533205e+29 ]
[ "nonn" ]
A099748
[ 1, 2, 21, 225, 3328, 33518, 257909, 1544907, 7657779, 32454761, 121100938, 405911691, 1242567609, 3517715389, 9305703095, 23194232130, 54848107788, 123760738779, 267768667311, 557808040826, 1122804257019, 2190539008704, 4153269969884, 7670791137960 ]
[ "nonn" ]
A052850
[ 0, 2, 5, 20, 114, 864, 8280, 96480, 1325520, 20966400, 374855040, 7468070400, 163938297600, 3929729126400, 102104460057600, 2857878742118400, 85719362496768000, 2742726680838144000, 93247371837075460000, 3.356802948155425e+21, 1.2755644406319919e+23 ]
[ "easy", "nonn" ]
A285722
[ 0, 1, 1, 2, 0, 3, 4, 3, 2, 6, 7, 5, 0, 5, 10, 11, 8, 6, 4, 9, 15, 16, 12, 9, 0, 8, 14, 21, 22, 17, 13, 10, 7, 13, 20, 28, 29, 23, 18, 14, 0, 12, 19, 27, 36, 37, 30, 24, 19, 15, 11, 18, 26, 35, 45, 46, 38, 31, 25, 20, 0, 17, 25, 34, 44, 55, 56, 47, 39, 32, 26, 21, 16, 24, 33, 43, 54, 66, 67, 57, 48, 40, 33, 27, 0, 23, 32, 42, 53, 65, 78, 79, 68, 58, 49, 41, 34, 28, 22, 31, 41, 52, 64, 77, 91 ]
[ "nonn", "tabl" ]
A018663
[ 1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819 ]
[ "nonn", "fini", "full", "easy" ]
A083735
[ 703, 1105, 2465, 10585, 18721, 19345, 29341, 38503, 46657, 50881, 75361, 76627, 88831, 104653, 115921, 146611, 162401, 188191, 213265, 226801, 252601, 278545, 286903, 294409, 314821, 334153, 340561, 359341, 385003, 385201, 399001, 410041 ]
[ "nonn" ]
A105587
[ 1, 2, 3, 4, 1, 6, 7, 8, 2, 3, 11, 12, 4, 14, 15, 16, 5, 18, 6, 20, 7, 22, 23, 24, 8, 9, 27, 10, 11, 30, 31, 32, 12, 34, 35, 36, 13, 38, 39, 40, 14, 42, 43, 44, 15, 16, 47, 48, 17, 18, 19, 52, 20, 54, 21, 56, 22, 58, 59, 60, 23, 62, 63, 24, 25, 66, 67, 68, 26, 70, 71, 72, 27, 74, 75 ]
[ "easy", "nonn" ]
A171144
[ 16, 26, 36, 46, 56, 60, 61, 62, 63, 64, 65, 66, 106, 206, 216, 306, 316, 326, 406, 416, 426, 436, 506, 516, 526, 536, 546, 601, 602, 603, 604, 605, 606, 612, 613, 614, 615, 616, 623, 624, 625, 626, 634, 635, 636, 645, 646, 656, 1006, 1016, 1026, 1036, 1046 ]
[ "nonn", "base" ]
A258991
[ 0, 8, 3, 6, 7, 3, 1, 1, 3, 0, 1, 6, 4, 9, 5, 3, 6, 1, 6, 1, 4, 8, 9, 0, 4, 3, 6, 5, 4, 2, 3, 8, 7, 7, 0, 5, 4, 3, 8, 2, 4, 6, 7, 3, 2, 5, 5, 4, 1, 5, 4, 1, 6, 8, 3, 6, 0, 7, 5, 9, 1, 8, 3, 5, 5, 4, 3, 8, 1, 9, 1, 2, 7, 1, 4, 5, 6, 2, 4, 0, 1, 1, 9, 9, 6, 0, 7, 2, 6, 9, 1, 9, 7, 6, 9, 7, 6, 6, 4, 2, 6, 0, 3, 7, 6, 9, 7 ]
[ "nonn", "cons", "easy" ]
A078326
[ 9, 289, 676, 9801, 12168, 235225, 332929, 465125, 1825201, 11309769, 384199201, 592192225, 4931691076, 5425069448, 13051463049, 221322261601, 443365544449, 865363202001, 8192480787001, 11968683934832, 13325427460801, 15061377048201, 28821995554248 ]
[ "nonn" ]
A221097
[ 1, 1, 6, 90, 2328, 84660, 3972060, 229176654, 15712089120, 1248343353216, 112832687750400, 11437476445244520, 1285433373363701800, 158682294244352660000, 2.1349655111889802e+22, 3.110218068324342e+24, 4.8786269394312394e+26, 8.199975554155883e+28 ]
[ "nonn" ]
A047574
[ 5, 6, 7, 13, 14, 15, 21, 22, 23, 29, 30, 31, 37, 38, 39, 45, 46, 47, 53, 54, 55, 61, 62, 63, 69, 70, 71, 77, 78, 79, 85, 86, 87, 93, 94, 95, 101, 102, 103, 109, 110, 111, 117, 118, 119, 125, 126, 127, 133, 134, 135, 141, 142, 143, 149, 150, 151, 157, 158, 159 ]
[ "nonn", "easy" ]
A076781
[ 1, 6, 1296, 10077696, 2821109907456, 28430288029929700000, 1.0314424798490537e+28, 1.3471354624412734e+38, 6.334028666297328e+49 ]
[ "nonn" ]
A259332
[ 1, 1, 2, 1, 6, 5, 1, 12, 27, 14, 1, 20, 85, 112, 42, 1, 30, 205, 492, 450, 132, 1, 42, 420, 1582, 2565, 1782, 429, 1, 56, 770, 4172, 10415, 12562, 7007, 1430 ]
[ "nonn", "tabl", "more" ]
A024262
[ 0, 1, -4, -104, 6656, -40064, -42409984, 4996996096, 379877605376, -280033142964224, 36077603872833540, 18835361007974220000, -1.1364456303888437e+22, 3.67251340814801e+23, 3.0761856186157035e+27, -1.6924964138494327e+30 ]
[ "sign" ]
A176855
[ 1, 1, 0, -2, -8, -25, -72, -197, -514, -1267, -2884, -5748, -8468, -119, 68688, 382434, 1557232, 5481369, 17494220, 51382510, 138541696, 335629309, 685402744, 919210879, -913800290, -13689355373, -71111254588, -287636394436 ]
[ "easy", "sign" ]
A355895
[ 1, 3, 11, 7, 17, 41, 37, 83, 79, 109, 241, 239, 499, 491, 1117, 1109, 2539, 2531, 5623, 5591, 11471, 11467, 23369, 23357 ]
[ "nonn", "more" ]
A320472
[ 1, 3, 5, 6, 7, 9, 11, 12, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 31, 32, 34, 36, 38, 39, 40, 43, 44, 45, 47, 49, 50, 52, 54, 56, 57, 58, 60, 62, 63, 64, 66, 68, 69, 70, 72, 74, 75, 77, 79, 81, 82, 83, 85, 87, 88, 89, 91, 93, 94, 95, 97, 99, 100, 101, 103, 106, 107, 108, 110, 112, 113, 114, 117, 118, 119, 121, 123 ]
[ "nonn" ]
A209356
[ 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 6 ]
[ "nonn" ]
A036417
[ 1, 6, 7, 106, 112, 113, 33102, 33215, 66317, 99532, 165849, 265381, 364913 ]
[ "nonn", "more" ]
A377493
[ 1, 3, 51, 1695, 85524, 5826402, 501281256, 52178851302, 6378309961152, 895845418408992, 142179729906910690, 25166131508370203000, 4.915451890368514e+21, 1.0502257769872345e+24, 2.4366480939857813e+26, 6.100841940681128e+28 ]
[ "nonn" ]
A003608
[ 0, 4, 8, 21, 52, 65, 96, 1, 5, 9, 31, 53, 75, 97, 101, 501, 505, 905, 909, 319, 323, 723, 727, 137, 141, 541, 545, 945, 949, 359, 363, 763, 767, 177, 181, 581, 585, 985, 989, 399, 304, 803, 708, 217, 122, 621, 526, 35, 93, 79, 38, 24, 82, 68, 27, 13, 71, 57, 16, 2, 6, 1, 5, 9, 31, 53, 75, 97, 101, 501, 505 ]
[ "nonn", "base", "easy" ]
A058911
[ 0, 1, 2, 3, 6, 9, 462 ]
[ "nonn", "hard", "more" ]
A239602
[ 7, 4, 82, 643, 8773, 128347, 1991329, 31686730, 510551001, 8269184568, 134276229983, 2183190483244, 35519217176984, 578060604385531, 9409214132537900, 153168259416071360, 2493459020526522000 ]
[ "nonn" ]
A211829
[ 1, 7, 33, 146, 664, 3199, 16479, 90774, 532870, 3319142, 21844498, 151329352, 1099821989, 8361242674, 66320784806, 547602705993, 4697109617699, 41777867535655, 384671271441332, 3661037447438874, 35965775221693132 ]
[ "nonn" ]
A243433
[ 1, 0, 8, 2, 0, 8, 8, 4, 4, 9, 2, 7, 0, 3, 6, 3, 3, 9, 6, 9, 4, 5, 5, 1, 8, 6, 6, 0, 4, 8, 2, 9, 5, 4, 3, 7, 2, 7, 8, 1, 2, 0, 9, 3, 5, 3, 6, 5, 3, 6, 5, 1, 7, 7, 4, 9, 1, 2, 7, 0, 8, 4, 3, 3, 8, 1, 6, 8, 4, 1, 1, 1, 7, 5, 9, 6, 2, 9, 3, 9, 5, 0, 6, 2, 8, 7, 8, 3, 8, 2, 0, 4, 2, 6, 4, 5, 5, 5, 4, 2 ]
[ "nonn", "cons" ]
A379575
[ 0, 1, 2, 13, 157, 3292, 110578, 5903888, 485522560 ]
[ "nonn", "more", "changed" ]
A291886
[ 0, 1, 3, 8, 24, 73, 239, 808, 2839, 10173, 37107, 136778, 508622, 1902931, 7156180, 27020991, 102387426, 389129477, 1482851762, 5664065704, 21681357734, 83154466615, 319486977769, 1229491584784, 4738571829454, 18288152053984, 70672285064968, 273430196389027 ]
[ "nonn" ]
A291317
[ 1, 1, 1, 3, 4, 3, 7, 7, 6, 10, 7, 12, 3, 10, 11, 7, 11, 1, 12, 6, 21, 1, 7, 12, 25, 3, 25, 28, 16, 26, 25, 6, 32, 19, 15, 21, 28, 3, 12, 21, 24, 13, 21, 36, 17, 45, 41, 45, 8, 40, 11, 6, 25, 41, 23, 4, 43, 52, 51, 57, 28, 21, 11, 47, 26, 29, 57, 51, 48, 56, 12 ]
[ "nonn" ]
A059574
[ 1, 1, 2, 6, 4, 1, 1, 13, 19, 23, 116, 107, 87, 48, 1, 1, 243, 458, 635, 708, 736, 5659, 5533, 5163, 4239, 2967, 1517, 1, 1, 11562, 22824, 33291, 41772, 47733, 50031, 50796, 521040, 515254, 497789, 452016, 385422, 301161, 204598, 103125, 1 ]
[ "easy", "nonn", "tabl" ]
A186303
[ 4, 12, 16, 24, 36, 40, 52, 64, 76, 84, 96, 100, 112, 120, 132, 136, 156, 180, 184, 192, 216, 220, 232, 240, 244, 252, 300, 304, 316, 324, 360, 364, 372, 376, 412, 420, 432, 444, 456, 460, 484, 492, 496, 516, 520, 532, 544 ]
[ "nonn", "easy" ]
A163174
[ 1, 24, 552, 12696, 291732, 6703488, 154034496, 3539441664, 81330144060, 1868823662376, 42942280730712, 986738081076264, 22673505553878564, 520997277758500740, 11971601073631152000, 275086336118245400000 ]
[ "nonn" ]
A179886
[ 1, 1, 7, 7, 15, 15, 31, 31, 39, 39, 55, 55, 71, 71, 111, 111, 119, 119, 151, 151, 175, 175, 177, 177, 231, 231, 239, 239, 255, 255, 303, 303, 311, 311, 313, 313, 319, 319, 329, 329, 335, 335, 337, 337, 345, 345, 375, 375, 391, 391, 393, 393, 479, 479, 521, 521 ]
[ "nonn" ]
A159931
[ 1, 2, 1, 4, 3, 2, 28, 27, 26, 24, 471772, 471771, 471770, 471768, 471744, 2.3368379007628963e+28, 2.3368379007628963e+28, 2.3368379007628963e+28, 2.3368379007628963e+28 ]
[ "nonn", "tabl" ]
A110265
[ 5, 3, 7, 5, 10, 7, 7, 9, 9, 9, 11, 11, 12, 11, 14, 14, 14, 14, 17, 16, 17, 17, 17, 19, 20, 20, 20, 20, 23, 23, 23, 23, 24, 17, 26, 26, 27, 27, 27, 27, 30, 30, 31, 32, 23, 23, 23, 34, 25, 36, 35, 35, 35, 35, 38, 40, 29, 29, 29, 29, 29, 29, 43, 43, 43, 43, 32, 33, 32, 32, 35, 35 ]
[ "nonn" ]
A177763
[ 1, 7, 16, 18, 19, 23, 28, 31, 32, 47, 60, 63, 74, 99, 100, 122, 124, 143, 144, 162, 166, 179, 183, 194, 207, 209, 218, 227, 234, 239, 240, 242, 243, 250, 295, 316, 341, 348, 368, 380, 399, 412, 421, 423, 448, 485, 495, 524, 535, 540, 551, 583, 608, 624, 625 ]
[ "nonn" ]
A235201
[ 0, 1, 2, 4, 3, 7, 8, 5, 6, 16, 14, 17, 12, 19, 10, 28, 9, 11, 32, 13, 21, 20, 34, 53, 24, 49, 38, 64, 15, 43, 56, 59, 18, 68, 22, 35, 48, 37, 26, 76, 42, 67, 40, 29, 51, 112, 106, 107, 36, 25, 98, 44, 57, 23, 128, 119, 30, 52, 86, 31, 84, 131, 118, 80, 27, 133, 136, 41, 33 ]
[ "nonn", "mult" ]
A355148
[ 12, 14, 15, 16, 18, 21, 24, 25, 27, 28, 32, 35, 36, 42, 45, 48, 49, 54, 56, 63, 64, 72, 81, 3388, 7744, 101787, 101808, 111888, 151848, 212565, 212898, 232656, 313464, 313575, 353868, 383595, 383838, 414585, 434676, 454545, 505808, 515595, 525252, 555888 ]
[ "base", "nonn" ]
A016226
[ 1, 16, 197, 2252, 25113, 277608, 3059149, 33672484, 370484705, 4075681280, 44833892181, 493178406396, 5424984839977, 59674922718232, 656424507814493, 7220671017615188, 79427386920390130, 873701279030783600 ]
[ "nonn" ]