id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A108501
[ 2, 3, 2, 5, 2, 4, 2, 7, 3, 4, 2, 7, 2, 4, 3, 11, 2, 6, 2, 7, 3, 4, 2, 12, 3, 4, 3, 7, 2, 7, 2, 15, 3, 4, 3, 12, 2, 4, 3, 12, 2, 7, 2, 7, 4, 4, 2, 19, 3, 6, 3, 7, 2, 8, 3, 12, 3, 4, 2, 14, 2, 4, 4, 22, 3, 7, 2, 7, 3, 7, 2, 21, 2, 4, 4, 7, 3, 7, 2, 19, 4, 4, 2, 14, 3, 4, 3, 12, 2, 11, 3, 7, 3, 4, 3, 30, 2 ]
[ "nonn" ]
A199288
[ 5, 8, 4, 5, 3, 2, 4, 9, 0, 7, 9, 0, 4, 0, 6, 3, 0, 4, 5, 3, 3, 6, 9, 6, 6, 4, 0, 0, 1, 1, 1, 7, 9, 3, 3, 7, 1, 1, 3, 1, 3, 9, 0, 9, 0, 0, 5, 1, 8, 3, 4, 6, 3, 7, 3, 0, 5, 7, 6, 4, 4, 5, 2, 8, 6, 3, 8, 7, 6, 3, 9, 6, 3, 3, 7, 4, 7, 9, 4, 2, 2, 9, 4, 7, 5, 9, 2, 2, 1, 3, 1, 0, 8, 2, 4, 3, 4, 7, 7 ]
[ "nonn", "cons" ]
A284423
[ 1, 11, 101, 1101, 10101, 110101, 1010101, 11010101, 101010101, 1101010101, 10101010101, 110101010101, 1010101010101, 11010101011101, 101010101001001, 1101010101111111, 10101010100111112, 110101010101011100, 1010101010111101000, 11010101111011000000 ]
[ "nonn", "easy" ]
A047633
[ 1, 0, 210, 1470, 10710, 39312, 113610 ]
[ "nonn" ]
A003906
[ 1, 85, 85, 323, 323, 324, 646, 646, 816, 1140, 1215, 1215, 1615, 1920, 1920, 1920, 1938, 1938, 2432, 2754, 3078 ]
[ "nonn", "fini", "full" ]
A218504
[ 1, 1, 3, 9, 40, 200, 1286, 9002, 74712, 672408, 6892312, 75815432, 925733216, 12034531808, 170656068480, 2559841027200, 41356302857344, 703057148574848, 12752569691858048, 242298824145302900, 4875886476833446000, 102393616013502370000, 2.2641069407569157e+21 ]
[ "nonn" ]
A001295
[ 132, 66, 66, 30, 36, 30, 12, 18, 18, 12, 4, 8, 10, 8, 4, 1, 3, 5, 5, 3, 1, 1, 0, 3, 2, 3, 0, 1 ]
[ "nonn", "tabl", "fini", "full" ]
A111393
[ 1, 1, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7 ]
[ "base", "nonn" ]
A227908
[ 0, 1, 1, 1, 2, 1, 1, 2, 2, 2, 1, 2, 3, 2, 2, 0, 2, 6, 1, 3, 5, 2, 3, 2, 1, 2, 2, 5, 4, 3, 2, 3, 8, 1, 4, 3, 3, 2, 5, 1, 2, 4, 5, 3, 4, 4, 2, 6, 1, 4, 5, 3, 3, 6, 2, 6, 5, 4, 5, 7, 3, 1, 9, 2, 3, 6, 1, 2, 5, 4, 7, 2, 7, 6, 6, 2, 4, 10, 3, 3, 6, 1, 7, 9, 5, 4, 5, 4, 3, 5, 3, 5, 8, 4, 4, 5, 2, 11, 9, 4 ]
[ "nonn" ]
A253040
[ 2638, 1866, 3119, 5860, 11904, 24232, 51292, 106308, 220782, 459446, 975228, 2051948, 4296456, 8990830, 18974386, 40168988, 84355336, 176912878, 372064076, 789230276, 1658790278, 3487370854, 7319531044, 15513370438, 32648371576 ]
[ "nonn" ]
A334023
[ 0, 2, 3, 4, 5, 9, 7, 8, 9, 15, 11, 16, 13, 21, 20, 16, 17, 27, 19, 25, 28, 33, 23, 32, 25, 39, 27, 35, 29, 61, 31, 32, 44, 51, 42, 45, 37, 57, 52, 48, 41, 84, 43, 55, 54, 69, 47, 64, 49, 75, 68, 65, 53, 81, 66, 64, 76, 87, 59, 107, 61, 93, 72, 64, 78, 132, 67 ]
[ "nonn" ]
A006777
[ 1, 2, 4, 8, 14, 26, 43, 74, 120, 197, 311, 495, 768, 1189, 1811, 2748, 4116, 6136, 9058, 13299, 19370, 28069, 40399, 57856, 82374, 116736, 164574, 231007, 322749, 449089, 622263, 858935, 1181048, 1618209, 2209299, 3006273, 4077285, 5512650, 7430440, 9986147 ]
[ "nonn" ]
A117357
[ 0, 1, 0, 1, 0, 1, 1, 1, 1, 2, 2, 3, 3, 4, 5, 7, 7, 11, 12, 16, 19, 25, 29, 38, 46, 59, 72, 91, 110, 141, 171, 214, 264, 331, 405, 509, 623, 777, 957, 1189, 1462, 1822, 2235, 2774, 3418, 4228, 5205, 6442, 7922, 9793, 12053, 14870, 18298, 22572, 27747, 34203 ]
[ "nonn" ]
A190554
[ 7, 12, 24, 36, 41, 53, 65, 70, 82, 94, 106, 111, 123, 135, 140, 152, 164, 176, 181, 193, 205, 210, 222, 234, 239, 246, 251, 263, 275, 280, 292, 304, 309, 321, 333, 345, 350, 362, 374, 379, 391, 403, 408, 415, 420 ]
[ "nonn" ]
A213416
[ 32, 2048, 114302, 5524088, 235950302, 9107867048, 323797652462, 10764286026008 ]
[ "nonn" ]
A073528
[ 1, 2, 3, 4, 5, 11, 19, 31, 37, 67, 149, 199, 601, 941, 1447, 1709 ]
[ "nonn", "more" ]
A207956
[ 9, 81, 281, 989, 3923, 15921, 67007, 286299, 1240603, 5420023, 23828357, 105188575, 465711669, 2065999789, 9177987717, 40811215453, 181593070243, 808383490865, 3599754765767, 16033313059243, 71423194026691, 318200352273815 ]
[ "nonn" ]
A089752
[ 1, 0, 1, 1, 2, 3, 10, 27, 101, 364, 1562 ]
[ "dead" ]
A084270
[ 0, 1, 6, 40, 375, 5176, 103236, 2922445, 116011230, 6433447396, 498234407451, 54007795331920, 8213123246906760, 1756336596363006700, 528975889250504000000, 2.2468801851602326e+23, 1.34708289561117e+26 ]
[ "nonn" ]
A107149
[ 11, 47, 103, 163, 199, 311, 419, 499, 587, 599, 683, 863, 883, 907, 911, 991, 1087, 1123, 1291, 1307, 1367, 1439, 1543, 1567, 1571, 1699, 1907, 2003, 2039, 2539, 2579, 2671, 2731, 2803, 2843, 2927, 3191, 3259, 3323, 3391, 3463, 3499, 3623 ]
[ "nonn", "easy" ]
A169710
[ 4, 4, 12, 8, 12, 20, 28, 12, 12, 20, 28, 28, 44, 76, 68, 20, 12, 20, 28, 28, 44, 76, 68, 36, 44, 68, 84, 100, 164, 244, 156, 36, 12, 20, 28, 28, 44, 76, 68, 36, 44, 68, 84, 100, 164, 244, 156, 52, 44, 68, 84, 100, 164, 220, 172, 116, 156, 220, 268, 364, 572, 700, 348, 68, 12 ]
[ "nonn" ]
A098567
[ 2, 3, 3, 5, 5, 5, 7, 7, 31, 5, 59, 5, 11, 137, 397, 211, 2851, 601, 373, 271, 17467, 127, 1657, 52951, 6547, 11971, 37489 ]
[ "nonn", "more" ]
A250557
[ 13, 117, 761, 5105, 31525, 177421, 937817, 4803653, 24257725, 121800949, 610147053, 3053493273, 15274472475, 76391277073, 382008613455, 1910192140573, 9551389260819, 47758200502193, 238794678323345, 1193984277090533 ]
[ "nonn" ]
A318560
[ 1, 1, 2, 2, 3, 4, 5, 3, 8, 7, 7, 8, 11, 12, 15, 5, 15, 17, 22, 14, 27, 19, 30, 13, 27, 30, 33, 26, 42, 37, 56, 7, 44, 45, 51, 34, 77, 67, 72, 25 ]
[ "nonn", "more" ]
A190197
[ 2, 3, 5, 11, 29, 89, 313, 1259, 5669, 28349, 155921, 935531, 6080957, 42566731, 319250501, 2554004029, 21709034261, 195381308371, 1856122429537, 18561224295377, 194892855101467, 2143821406116139, 24653946170335610, 295847354044027400, 3698091925550342000, 48075195032154450000 ]
[ "nonn" ]
A168745
[ 1, 20, 380, 7220, 137180, 2606420, 49521980, 940917620, 17877434780, 339671260820, 6453753955580, 122621325156020, 2329805177964380, 44266298381323220, 841059669245141100, 15980133715657683000 ]
[ "nonn", "easy" ]
A294696
[ 1, 1, 2, 6, 21, 73, 243, 785, 2511, 8073, 26312, 87257, 294603, 1011602, 3526519, 12456315, 44495535, 160468964, 583421709, 2135814678, 7865015071, 29109558620, 108213772256, 403835324635, 1512193773211, 5679789173645, 21391713994138, 80767323230065, 305638129059811, 1158989815141334, 4403331448837253 ]
[ "nonn", "easy" ]
A213901
[ 5, 7, 29, 31, 79, 103, 127, 149, 151, 173, 197, 199, 223, 269, 271, 293, 317, 367, 439, 463, 487, 557, 631, 701, 727, 751, 773, 797, 821, 823, 941, 967, 991, 1039, 1061 ]
[ "nonn" ]
A199365
[ 3, 7, 503, 4003, 10979, 32003, 87811, 157219, 219491, 470599, 665503, 821519, 907927, 2048003, 3764771, 4370911, 6572131, 9410551, 12194503, 12448547, 14609059, 16384003, 25326503, 30118147, 34967267, 44957699, 48035959, 55990087, 58824503, 62500003, 63253007, 131072003 ]
[ "nonn" ]
A170127
[ 1, 22, 462, 9702, 203742, 4278582, 89850222, 1886854662, 39623947902, 832102905942, 17474161024782, 366957381520422, 7706105011928862, 161828205250506100, 3398392310260628000, 71366238515473195000 ]
[ "nonn" ]
A170359
[ 1, 14, 182, 2366, 30758, 399854, 5198102, 67575326, 878479238, 11420230094, 148462991222, 1930018885886, 25090245516518, 326173191714734, 4240251492291542, 55123269399790050, 716602502197270700 ]
[ "nonn" ]
A343517
[ 1, 4, 12, 42, 130, 506, 1722, 6622, 24426, 93427, 352726, 1359388, 5200312, 20097156, 77567064, 300787366, 1166803126, 4539197723, 17672631918, 68933307843, 269129530770, 1052113994340, 4116715363822, 16124224571368, 63205303313900, 247961973949536 ]
[ "nonn" ]
A141990
[ 43, 101, 449, 739, 797, 971, 1087, 1319, 1493, 1609, 1667, 1783, 2131, 2711, 3001, 3407, 3581, 3697, 3929, 4219, 4451, 4567, 4799, 4973, 5147, 5437, 5669, 5843, 6133, 6481, 6829, 7177, 7351, 7583, 7699, 7757, 7873, 8221, 8627, 9091, 9323, 9439, 9497, 9613 ]
[ "nonn", "easy" ]
A059911
[ 0, 3, 10, 16, 37, 10, 42, 24, 58, 53, 164, 26, 68, 38, 32, 68, 169, 22, 222, 38, 42, 50, 328, 40, 180, 219, 108, 26, 334, 82, 460, 82, 92, 72, 220, 108, 449, 86, 128, 80, 192, 22, 336, 110, 222, 218, 540, 84, 778, 129, 150, 80, 270, 54, 328, 356, 132, 68, 348, 22 ]
[ "easy", "nonn" ]
A279977
[ 0, 1, 0, 0, 3, 0, 3, 9, 9, 0, 3, 24, 50, 31, 0, 9, 62, 221, 296, 108, 0, 15, 134, 822, 1922, 1650, 366, 0, 31, 277, 2669, 10491, 15511, 8666, 1205, 0, 57, 542, 8068, 50690, 124030, 118857, 43543, 3873, 0, 108, 1035, 23169, 226771, 887491, 1393359, 876704, 211650 ]
[ "nonn", "tabl" ]
A322551
[ 13, 29, 43, 47, 73, 79, 101, 137, 139, 149, 163, 167, 199, 233, 257, 269, 271, 293, 313, 347, 373, 389, 421, 439, 443, 449, 467, 487, 491, 499, 577, 607, 631, 647, 653, 673, 677, 727, 751, 757, 811, 821, 823, 829, 839, 907, 929, 937, 947, 983, 1051, 1061, 1093 ]
[ "nonn" ]
A114052
[ 1, 26, 1351, 70226, 3650401, 189750626, 9863382151, 512706121226, 26650854921601, 1385331749802026, 72010600134783750, 3743165875258953000, 194572614913330770000, 1.0114032809617941e+22, 5.257351334852196e+23, 2.73281129084218e+25, 1.4205361361044486e+27 ]
[ "easy", "nonn" ]
A322137
[ 1, 1, 3, 17, 140, 1524, 20673, 336259, 6382302, 138525780, 3384988809, 91976158434, 2751122721402, 89833276321440, 3179852538140115, 121287919647418110, 4959343701136930000, 216406753768138670000, 1.0037782414506892e+22, 4.9317589124609306e+23 ]
[ "nonn" ]
A312690
[ 1, 4, 8, 14, 21, 25, 29, 35, 37, 40, 48, 56, 59, 63, 70, 70, 73, 82, 90, 92, 97, 106, 103, 106, 117, 124, 124, 130, 142, 137, 139, 152, 159, 156, 162, 177, 171, 173, 187, 194, 189, 194, 211, 204, 207, 223, 229, 222, 227, 245 ]
[ "nonn" ]
A157077
[ 1, 0, 2, -2, 0, 6, 0, -12, 0, 20, 6, 0, -60, 0, 70, 0, 60, 0, -280, 0, 252, -20, 0, 420, 0, -1260, 0, 924, 0, -280, 0, 2520, 0, -5544, 0, 3432, 70, 0, -2520, 0, 13860, 0, -24024, 0, 12870, 0, 1260, 0, -18480, 0, 72072, 0, -102960, 0, 48620, -252, 0, 13860, 0, -120120, 0, 360360, 0, -437580, 0, 184756 ]
[ "tabl", "sign" ]
A151548
[ 1, 3, 5, 7, 5, 11, 17, 15, 5, 11, 17, 19, 21, 39, 49, 31, 5, 11, 17, 19, 21, 39, 49, 35, 21, 39, 53, 59, 81, 127, 129, 63, 5, 11, 17, 19, 21, 39, 49, 35, 21, 39, 53, 59, 81, 127, 129, 67, 21, 39, 53, 59, 81, 127, 133, 91, 81, 131, 165, 199, 289, 383, 321, 127, 5, 11, 17, 19, 21, 39 ]
[ "nonn" ]
A258909
[ 3644672, 77704089, 2026873370, 55658584373, 1346660412346, 33594417416223, 843497063678720, 20397369281984560, 489343554187851700, 11717335464723341000, 277507963941823400000, 6.517999553991197e+21 ]
[ "nonn" ]
A135937
[ 1, 2, 6, 168, 6623019333730800000 ]
[ "nonn" ]
A371111
[ 210, 2100, 2110, 2210, 21000, 21100, 21110, 22100, 22110, 22210, 210000, 210210, 211000, 211100, 211110, 221000, 221100, 221110, 222100, 222110, 222210, 2100000, 2100210, 2102100, 2102110, 2102210, 2110000, 2110210, 2111000, 2111100, 2111110, 2210000 ]
[ "nonn", "base" ]
A189881
[ 1, 0, 0, 2, 10, 4, 12, 32, 96, 144, 528, 1712, 7472, 24500, 103536, 486020, 2218808, 11113020, 59242576, 342584556, 1981826412 ]
[ "nonn", "hard" ]
A126625
[ 1, 1, 1, 1, 7, 8, 2, 0, 1, 1, 0, 4, 1, 8, 4, 3, 3, 2, 2, 2, 4, 4, 8, 6, 2, 6, 7, 5, 3, 5, 0, 5, 3, 3, 5, 4, 0, 1, 3, 8, 7, 9, 3, 0, 2, 0, 9, 6, 4, 7, 4, 2, 2, 4, 4, 4, 1, 1, 0, 8, 6, 6, 6, 1, 3, 8, 8, 7, 6, 0, 3, 2, 5, 5, 7, 6, 9, 2, 8, 6, 6, 4, 0, 5, 9, 4, 4, 8, 9, 8, 4, 1, 5, 0, 0, 1, 2, 4, 7, 5, 7, 5, 2, 1, 3 ]
[ "nonn", "cons" ]
A282336
[ 0, 0, 50800, 3025368, 182122160, 10612378412, 584739260830, 31572290506580, 1674538977289754, 87493618239027170, 4520664945568841000, 231421657900928960000, 1.1755513680739323e+22, 5.932684297221142e+23 ]
[ "nonn" ]
A336977
[ 1, -1, -3, -2, 1, 9, 11, 15, 6, -18, -46, -54, -115, -101, 32, 82, 182, 455, 804, 915, 434, -114, 196, -974, -3507, -6913, -7555, -5081, -4480, -7463, -4861, 7677, 25779, 56080, 76015, 51021, 53996, 104670, 114132, 93920, -33843, -233380, -491936, -658774, -597698, -601576 ]
[ "sign" ]
A047349
[ 0, 2, 4, 7, 9, 11, 14, 16, 18, 21, 23, 25, 28, 30, 32, 35, 37, 39, 42, 44, 46, 49, 51, 53, 56, 58, 60, 63, 65, 67, 70, 72, 74, 77, 79, 81, 84, 86, 88, 91, 93, 95, 98, 100, 102, 105, 107, 109, 112, 114, 116, 119, 121, 123, 126, 128, 130, 133, 135, 137, 140, 142 ]
[ "nonn", "easy" ]
A025679
[ 0, 0, 1, 0, 1, 2, 0, 1, 2, 0, 3, 1, 2, 0, 3, 1, 4, 2, 0, 3, 1, 4, 2, 5, 0, 3, 1, 4, 2, 5, 0, 3, 6, 1, 4, 2, 5, 0, 3, 6, 1, 4, 7, 2, 5, 0, 3, 6, 1, 4, 7, 2, 5, 8, 0, 3, 6, 1, 4, 7, 2, 5, 8, 0, 3, 6, 9, 1, 4, 7, 2, 5, 8, 0, 3, 6, 9, 1, 4, 7, 10, 2, 5, 8, 0, 3, 6, 9, 1, 4, 7, 10, 2, 5, 8, 0, 11, 3, 6, 9, 1, 4, 7, 10, 2, 5 ]
[ "nonn", "easy", "changed" ]
A116989
[ 1, 925, 1135716, 593223373, 130220375812, 14195655302684, 893936543319276, 36397263567477060, 1025115791220794900, 21899052879460200000, 372805053916689860000, 5.076066733212582e+21, 5.787503823925995e+22 ]
[ "easy", "nonn" ]
A107224
[ 1, 3, 4, 5, 6, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 38, 40, 48, 50, 51, 52, 53, 55, 56, 58, 59, 60, 61, 62, 64, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 87, 88, 89, 90, 92, 93, 94, 95, 96, 98, 100, 101 ]
[ "nonn" ]
A226626
[ 1, 2, 7, 3, 4, 4, 11, 12, 12, 12, 12, 12, 12, 12, 12, 22, 8, 6, 4, 14, 14, 14, 8, 11, 11, 11, 44, 5, 5, 5, 12, 28, 14, 24, 24, 24, 24, 24, 14, 14, 21, 21, 14, 7, 7, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 32, 8 ]
[ "nonn", "tabf" ]
A057406
[ 1, 12, 88, 524, 2786, 13788, 64998, 296032, 1314648, 5728172, 24595512, 104399172, 439084884, 1833027048, 7605691356, 31398503248, 129072844079, 528688519536, 2158900271080, 8792641674684, 35728408159781 ]
[ "nonn" ]
A213836
[ 1, 7, 2, 22, 13, 3, 50, 37, 19, 4, 95, 78, 52, 25, 5, 161, 140, 106, 67, 31, 6, 252, 227, 185, 134, 82, 37, 7, 372, 343, 293, 230, 162, 97, 43, 8, 525, 492, 434, 359, 275, 190, 112, 49, 9, 715, 678, 612, 525, 425, 320, 218, 127 ]
[ "nonn", "tabl", "easy" ]
A313329
[ 1, 4, 9, 16, 19, 29, 28, 39, 42, 42, 50, 61, 56, 71, 73, 76, 83, 94, 78, 102, 105, 104, 115, 125, 116, 135, 138, 122, 146, 157, 144, 167, 169, 164, 179, 190, 158, 198, 201, 192, 211, 221, 204, 231, 234, 202, 242, 253, 232, 263 ]
[ "nonn" ]
A117432
[ 1, 20, 63, 104, 7499430, 9228401 ]
[ "nonn", "base", "hard", "more" ]
A306427
[ 28, 84, 120, 240, 360, 252, 210, 660, 1008, 1848, 630, 1320, 420, 2310, 840, 4830, 1680, 3360, 5880, 11700, 1980, 4200, 1260, 9660, 3960, 3780, 2520, 6930, 4620, 8190, 6300, 7560, 5040, 18900, 19320, 5460, 23760, 7140, 39600, 15120, 27300, 12600, 59220, 45360 ]
[ "nonn" ]
A030890
[ 1, 3, 10, 43, 216, 1296, 9076, 72608, 653477, 6534771, 71882481, 862589776, 11213667090, 156991339265, 2354870088975, 37677921423614, 640524664201450, 11529443955626116, 219059435156896200, 4381188703137923600 ]
[ "nonn" ]
A297335
[ 13, 134, 1310, 13067, 130297, 1299649, 12964224, 129324245, 1290083201, 12869360145, 128379790482, 1280667891875, 12775456497741, 127443106317577, 1271324083289632, 12682246822046232, 126513283854140240 ]
[ "nonn" ]
A155163
[ 2, 9, 3, 64, 52, 4, 625, 855, 195, 5, 7776, 15306, 6546, 606, 6, 117649, 305571, 201866, 38486, 1701, 7, 2097152, 6806472, 6244680, 1950320, 194160, 4488, 8, 43046721, 168205743, 200503701, 90665595, 15597315, 887949, 11367, 9 ]
[ "nonn", "tabl" ]
A230824
[ 0, 2, 8, 62, 898, 29446, 1807682, 188719562, 33264404940, 9945976161290 ]
[ "nonn" ]
A016491
[ 4, 6, 1, 72, 1, 1, 1, 36, 4, 7, 1, 2, 5, 5, 1, 6, 2, 1, 9, 1, 4, 1, 1, 9, 2, 8, 1, 10, 1, 4, 1, 2, 1, 2, 2, 4, 6, 1, 33, 2, 8, 1, 1, 1, 1, 4, 1, 1, 12, 1, 1, 1, 1, 8, 7, 1, 2, 1, 1019, 4, 2, 6, 1604, 1, 1, 6, 3, 12, 1, 1, 7, 2, 1, 8, 11 ]
[ "nonn", "cofr" ]
A169552
[ 1, 11, 110, 1100, 11000, 110000, 1100000, 11000000, 110000000, 1100000000, 11000000000, 110000000000, 1100000000000, 11000000000000, 110000000000000, 1100000000000000, 11000000000000000, 110000000000000000 ]
[ "nonn" ]
A162586
[ 2, 3, 5, 8, 9, 12, 15, 18, 20, 24, 27, 32, 45, 54, 60, 75, 78, 80, 90, 102, 110, 120, 128, 135, 162, 165, 170, 180, 192, 195, 200, 234, 243, 275, 288, 312, 330, 333, 360, 384, 408, 432, 440, 450, 465, 480, 495, 500, 513, 540, 612, 620, 624, 675, 684, 702, 729 ]
[ "easy", "nonn" ]
A382424
[ 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0 ]
[ "nonn", "easy" ]
A019622
[ 6, 0, 9, 9, 8, 1, 0, 1, 5, 9, 0, 5, 2, 5, 4, 7, 9, 0, 3, 9, 0, 2, 5, 3, 6, 3, 3, 5, 3, 9, 0, 4, 1, 0, 3, 5, 3, 5, 9, 6, 3, 4, 8, 9, 5, 4, 1, 1, 7, 9, 3, 9, 2, 5, 8, 4, 8, 5, 4, 2, 9, 3, 7, 8, 6, 9, 9, 4, 4, 9, 0, 0, 7, 9, 6, 9, 5, 2, 2, 0, 0, 5, 4, 0, 8, 9, 7, 4, 1, 9, 2, 6, 5, 0, 3, 3, 8, 5, 3 ]
[ "nonn", "cons" ]
A212052
[ 0, 0, 0, 0, 0, 18, 26, 30, 46, 52, 104, 112, 148, 156, 176, 278, 342, 354, 406, 418, 562, 602, 642, 658, 794, 988, 1040, 1090, 1190, 1210, 1526, 1550, 1726, 1794, 1858, 2152, 2368, 2396, 2468, 2548, 2980, 3012, 3212, 3244, 3408, 3890, 3982, 4018 ]
[ "nonn" ]
A048164
[ 1, 4, 21, 358, 92007, 6029862760, 25898063359598158000, 4.777349467992218e+38, 1.625647784576878e+77 ]
[ "nonn", "nice", "easy" ]
A321189
[ 1, 1, 5, 73, 2169, 108901, 8288293, 890380177, 128364028145, 23918924529901, 5595490598128221, 1605718043992482600, 554663179293965400000, 2.2703871141982685e+23, 1.0867402365379272e+26, 6.014287934750172e+28, 3.810807122834273e+31 ]
[ "nonn" ]
A262779
[ 1, 110, 11011, 1101111, 110111111, 11011111111, 1101111111111, 110111111111111, 11011111111111112, 1101111111111111200, 110111111111111110000, 1.101111111111111e+22, 1.1011111111111111e+24, 1.1011111111111111e+26, 1.101111111111111e+28 ]
[ "nonn", "easy" ]
A135607
[ 0, 0, 0, 0, 1, 1, 2, 3, 5, 6, 7, 9, 11, 13, 15, 17, 20, 22, 25, 28, 31, 35, 38, 42, 45, 49, 53, 58, 62, 66, 71, 76, 81, 86, 91, 97, 103, 108, 114, 121, 127, 133, 140, 147, 154, 161, 168, 175, 183, 191, 198, 206, 215, 223, 232, 240, 249, 258, 267, 277, 286, 296, 305, 315 ]
[ "nonn" ]
A005102
[ 1, 2, 3, 4, 4, 4, 3, 2, 1, 2, 3, 2, 1, 2, 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, 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, 1, 1, 1 ]
[ "nonn" ]
A135481
[ 0, 1, 0, 3, 0, 1, 0, 7, 0, 1, 0, 3, 0, 1, 0, 15, 0, 1, 0, 3, 0, 1, 0, 7, 0, 1, 0, 3, 0, 1, 0, 31, 0, 1, 0, 3, 0, 1, 0, 7, 0, 1, 0, 3, 0, 1, 0, 15, 0, 1, 0, 3, 0, 1, 0, 7, 0, 1, 0, 3, 0, 1, 0, 63, 0, 1, 0, 3, 0, 1, 0, 7, 0, 1, 0, 3, 0, 1, 0, 15, 0, 1, 0, 3, 0, 1, 0, 7, 0, 1, 0, 3, 0, 1, 0, 31, 0, 1, 0, 3, 0, 1, 0 ]
[ "nonn", "easy" ]
A120282
[ -1, 1, -5, 7, -15, 7601, -91, 3617, -745739, 3317609, -5981591, 5436374093, -213827575, 213745149261, -249859397004145, 238988952277727, -28354566442037, 26315271553053480000, -108409774812137680, 3.394075340453839e+21 ]
[ "frac", "sign" ]
A244152
[ 1, 4, 10, 2, 24, 7, 6, 55, 18, 3, 16, 15, 121, 44, 12, 11, 39, 9, 36, 35, 105, 31, 250, 5, 29, 28, 93, 26, 25, 86, 22, 82, 238, 79, 20, 19, 81, 72, 17, 68, 218, 65, 517, 14, 62, 67, 60, 202, 195, 57, 59, 56, 185, 477, 8, 52, 50, 175, 51, 47, 177, 45, 495, 167, 42, 161, 46, 40, 162, 169, 150, 38, 143, 455, 459, 140, 153, 1060, 34, 134, 37, 32 ]
[ "nonn" ]
A342376
[ 0, 0, 0, 2, 0, 0, 0, 17, 2, 0, 0, 4, 0, 0, 0, 215, 0, 4, 0, 4, 0, 0, 0, 35, 2, 0, 23, 4, 0, 0, 0 ]
[ "nonn", "more" ]
A177042
[ 1, 2, 22, 604, 31238, 2620708, 325024572, 55942352184, 12765597850950, 3730771315561300, 1359124435588313900, 603916464771468200000, 3.215113161496695e+23, 2.020399766823573e+26, 1.47980747895225e+29, 1.2496319375153405e+32 ]
[ "nonn" ]
A292964
[ 1, 4, 2, 8, 10, 3, 13, 19, 16, 5, 17, 29, 32, 23, 6, 22, 40, 48, 44, 30, 7, 27, 52, 65, 68, 58, 37, 9, 34, 63, 82, 93, 89, 72, 46, 11, 38, 76, 102, 118, 120, 108, 87, 53, 12, 43, 88, 123, 144, 153, 149, 132, 101, 60, 14, 50, 99, 141, 171, 187, 189, 178, 155 ]
[ "nonn", "easy", "tabl" ]
A070204
[ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 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 ]
[ "nonn" ]
A226414
[ 7, 202, 921, 2959, 7821, 18389, 38225, 73227, 132057, 225713, 369579, 582397, 889777, 1321747, 1915261 ]
[ "nonn", "more" ]
A037449
[ 1, 8, 12, 1, 5, 24, 28, 8, 1, 40, 44, 12, 13, 56, 60, 1, 17, 8, 76, 5, 21, 88, 92, 24, 1, 104, 12, 28, 29, 120, 124, 8, 33, 136, 140, 1, 37, 152, 156, 40, 41, 168, 172, 44, 5, 184, 188, 12, 1, 8, 204, 13, 53, 24, 220, 56, 57, 232, 236, 60, 61, 248, 28, 1, 65, 264, 268, 17, 69 ]
[ "nonn", "easy" ]
A023070
[ 136, 1254, 1360, 1366, 1436, 10234, 10342, 10452, 12254, 12540, 12544, 12654, 13600, 13624, 13660, 13666, 14360, 14366, 14436, 14562, 100234, 100342, 100452, 101543, 102234, 102340, 102344, 102434, 103420, 103422, 103442, 104342, 104452, 104520 ]
[ "nonn", "base" ]
A052435
[ 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 1, 2, 2, 3, 2, 2, 2, 2, 2, 3, 2, 2, 3, 3, 3, 3, 3, 3, 2, 3, 3, 3, 3, 4, 3, 3, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 3, 3, 4, 4, 4, 4, 4, 4, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 4, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 4, 5, 5, 5, 4, 5, 4 ]
[ "sign", "look" ]
A353427
[ 0, 3, 7, 10, 15, 31, 36, 42, 43, 58, 63, 87, 122, 127, 136, 147, 170, 171, 175, 228, 234, 235, 250, 255, 292, 295, 343, 351, 471, 484, 490, 491, 506, 511, 528, 547, 586, 591, 676, 682, 683, 687, 698, 703, 904, 915, 938, 939, 943, 983, 996, 1002, 1003, 1018 ]
[ "nonn" ]
A132672
[ 1, 8, 7, 6, 5, 4, 3, 2, 16, 15, 14, 13, 12, 11, 10, 9, 72, 71, 70, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17 ]
[ "nonn" ]
A190056
[ 4, 9, 14, 19, 24, 29, 35, 39, 44, 50, 55, 59, 65, 70, 74, 79, 85, 90, 94, 100, 105, 110, 115, 120, 125, 131, 135, 140, 145, 150, 155, 160, 166, 170, 175, 181, 186, 190, 196, 201, 206, 210, 216, 221, 225, 231, 236, 241, 246, 251, 256, 262, 266, 271, 277, 281, 286, 291, 297, 301, 306, 312, 317, 321, 327, 332, 337, 342, 347, 352, 356 ]
[ "nonn" ]
A056403
[ 1, 1, 3, 9, 16, 102, 130, 800, 1889, 11089, 17598, 179255, 233448, 1865925, 5603767, 22468480, 44744046, 477260541, 636308684, 5732446015, 15272176563, 73301037291, 133274359128, 1466413083360 ]
[ "nonn" ]
A260661
[ 0, 0, 0, 0, 1, 3, 8, 22, 68, 235, 896, 3700, 16388, 77424, 388337, 2058898, 11494391, 67345463, 412884769, 2641957682, 17603708949, 121891857559, 875463364581, 6511352351724, 50074591410942, 397627804820554, 3256109939552809, 27464891261741532, 238366531369343100, 2126510299723649000, 19482346640311423000, 183143139819128260000, 1.765079515780983e+21 ]
[ "nonn" ]
A218469
[ 1, 1, 2, 1, 2, 2, 2, 3, 2, 3, 2, 3, 3, 4, 3, 4, 3, 5, 5, 6, 5, 5, 5, 6, 6, 6, 5, 4, 6, 6, 9, 7, 7, 6, 8, 7, 10, 6, 8, 5, 10, 8, 12, 9, 10, 7, 13, 9, 14, 10, 12, 7, 15, 9, 17, 9, 13, 6, 17, 10, 21, 10, 15, 8, 19, 11, 22, 9, 16, 8, 24, 12, 25, 12, 19, 10, 26, 12 ]
[ "nonn" ]
A192203
[ 16467033, 18185869, 21134553, 21374353, 21871365, 22247553, 22412533, 22721585, 24845313, 25118093, 25228929, 25345333, 25596933, 26217245, 27140113, 29218629, 29752345, 30323733, 30563245, 31943065, 32663265, 33367893, 36055045, 38269021, 39738061, 40547065 ]
[ "nonn" ]
A228105
[ 0, 432, 27648, 314928, 1769472, 6750000, 20155392, 50824368, 113246208, 229582512, 432000000, 765314352, 1289945088, 2085181488, 3252759552, 4920750000, 7247757312, 10427429808, 14693280768, 20323820592, 27648000000, 37050964272, 48980118528 ]
[ "nonn", "easy" ]
A264452
[ 1, 12, 103, 811, 6273, 48806, 386041, 3122069, 25900188, 220791812, 1935811756, 17461471292, 162038542377, 1546528485770, 15174625184321, 152994813139537, 1584120732683571, 16834244135840106, 183496533502593440, 2050337555698723600, 23470542944212950000 ]
[ "nonn" ]
A292059
[ 1, 8, 42, 104, 251, 464, 852, 1360, 2165, 3160, 4606, 6328, 8687, 11424, 15016, 19104, 24297, 30120, 37330, 45320, 55011, 65648, 78332, 92144, 108381, 125944, 146342, 168280, 193495, 220480, 251216, 283968, 320977, 360264, 404346, 450984, 502987, 557840, 618660, 682640 ]
[ "nonn", "easy" ]
A367217
[ 0, 0, 1, 3, 6, 12, 24, 46, 87, 164, 308, 577, 1080, 2021, 3779, 7058, 13166, 24533, 45674, 84978, 158026, 293737, 545747, 1013467, 1881032, 3489303, 6468910, 11985988, 22195905, 41080751, 75994642, 140514019, 259693004, 479749492, 885910870, 1635281386 ]
[ "nonn" ]
A118546
[ 9, 42, 42, 120, 196, 120, 270, 560, 560, 270, 525, 1260, 1600, 1260, 525, 924, 2450, 3600, 3600, 2450, 924, 1512, 4312, 7000, 8100, 7000, 4312, 1512, 2340, 7056, 12320, 15750, 15750, 12320, 7056, 2340, 3465, 10920, 20160, 27720, 30625, 27720, 20160 ]
[ "nonn", "tabl" ]
A179156
[ 1, 1, 5, 64, 1577, 64026, 3887167, 330394800, 37487397201, 5477556616750, 1002201757761971, 224502014115239140, 60447250689539460000, 1.926401172557242e+22, 7.172619686789756e+24 ]
[ "nonn" ]
A289107
[ 2, 4, 7, 12, 22, 37, 62, 102, 167, 272, 442, 717, 1162, 1882, 3047, 4932, 7982, 12917, 20902, 33822, 54727, 88552, 143282, 231837, 375122, 606962, 982087, 1589052, 2571142, 4160197, 6731342, 10891542, 17622887, 28514432, 46137322, 74651757, 120789082 ]
[ "nonn", "easy" ]
A197184
[ 1, -1, 1, -1, -1, 1, 7, -2, -1, 1, -13, 12, -3, -1, 1, -17, -22, 18, -4, -1, 1, 199, -45, -35, 25, -5, -1, 1, -605, 465, -84, -53, 33, -6, -1, 1, -225, -1449, 910, -133, -77, 42, -7, -1, 1, 11703, -864, -3094, 1594, -190, -108, 52, -8, -1, 1, -59317, 33780, -1380, -6027, 2583, -252, -147, 63, -9, -1, 1, 83143, -179398, 78567, -771, -10899, 3948, -315, -195, 75, -10, -1, 1, 991671, 271073, -461978, 159115, 2882, -18546, 5764, -374, -253, 88, -11, -1, 1 ]
[ "sign", "tabl" ]
A273288
[ 2, 3, 2, 5, 2, 7, 2, 3, 3, 11, 2, 13, 3, 3, 2, 17, 3, 19, 2, 5, 5, 23, 2, 5, 7, 3, 2, 29, 3, 31, 2, 7, 7, 5, 2, 37, 7, 7, 2, 41, 3, 43, 2, 3, 11, 47, 2, 7, 5, 7, 2, 53, 3, 7, 2, 11, 13, 59, 2, 61, 13, 3, 2, 7, 3, 67, 2, 13, 5, 71, 2, 73, 19, 5, 2, 7, 3, 79, 2, 3, 19 ]
[ "nonn" ]