id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A250145
[ 111, 2026, 16104, 81664, 311498, 974944, 2637228, 6376143, 14100493, 28998090, 56144452, 103306710, 181980592, 308701712, 506675752, 807775485, 1254955947, 1905142426, 2832649296, 4133191084, 5928550518, 8371971664, 11654349620 ]
[ "nonn" ]
A201516
[ 1, 3, 4, 1, 4, 3, 0, 1, 6, 6, 2, 9, 1, 2, 5, 9, 7, 6, 4, 5, 7, 6, 0, 8, 0, 5, 0, 6, 7, 6, 3, 6, 1, 4, 1, 7, 1, 7, 7, 1, 4, 0, 8, 2, 9, 1, 7, 9, 4, 8, 3, 0, 1, 1, 3, 0, 7, 5, 1, 6, 4, 3, 7, 7, 1, 8, 0, 4, 9, 8, 8, 2, 4, 9, 6, 7, 8, 0, 0, 0, 6, 9, 8, 5, 4, 2, 0, 4, 6, 3, 0, 5, 8, 6, 0, 2, 4, 9, 5 ]
[ "nonn", "cons" ]
A195890
[ 1, 1, 13, 1105, 680115, 3204150229 ]
[ "nonn" ]
A062100
[ 0, 1, 3, 6, 10, 36, 66, 136, 300, 630, 666, 3003, 3160, 10011, 13366, 16110, 60031, 66066, 106030, 163306, 303031, 333336, 336610, 600060, 630003, 1010331, 1030330, 1063611, 1313010, 3306306, 3316600, 6601161, 10006101, 11066160, 13336030, 16310616, 30330366 ]
[ "nonn", "base", "easy", "changed" ]
A143873
[ 1, 2, 3, 5, 8, 21, 53, 158, 503, 2181, 9658, 53517, 313683, 2389270 ]
[ "nonn", "more", "hard" ]
A221877
[ 1, 2, 2, 3, 8, 2, 4, 18, 12, 2, 5, 32, 36, 16, 2, 6, 50, 80, 60, 20, 2, 7, 72, 150, 160, 90, 24, 2, 8, 98, 252, 350, 280, 126, 28, 2, 9, 128, 392, 672, 700, 448, 168, 32, 2, 10, 162, 576, 1176, 1512, 1260, 672, 216, 36, 2 ]
[ "nonn", "tabl" ]
A085679
[ 1, 5, 7, 0, 7, 9, 6, 3, 2, 6, 7, 9, 4, 8, 9, 6, 6, 1, 9, 2, 3, 1, 3, 2, 1, 6, 9, 1, 6, 3, 9, 7, 5, 1, 4, 4, 2, 0, 9, 8, 5, 8, 4, 6, 9, 9, 6, 8, 7, 5, 4, 2, 9, 1, 0, 4, 8, 7, 4, 7, 2, 2, 9, 6, 1, 5, 3, 9, 0, 8, 2, 0, 3, 1, 4, 3, 1, 0, 4, 4, 9, 9, 3, 1, 4, 0, 1, 7, 4, 1, 2, 6, 7, 1, 0, 5, 8, 5, 3, 3, 9, 9, 1, 0, 7 ]
[ "cons", "nonn" ]
A387398
[ 1, 1, 1, 5, 2, 69, 1, 1, 5, 1, 1, 12869, 2, 5, 1, 1, 69, 2, 5, 1, 1, 601080389, 2, 5, 2, 69, 1, 1, 5, 2, 12869, 1, 1, 5, 1, 1, 69, 2, 5, 1, 1, 1832624140942590500, 2, 5, 2, 69, 1, 1, 5, 1, 1, 12869, 2, 5, 1, 1, 69, 2, 5, 2, 601080389, 1, 1, 5, 2, 69, 1, 1, 5, 2, 12869, 1, 1, 5, 1, 1, 69, 2, 5, 1, 1 ]
[ "nonn", "cofr" ]
A221244
[ 16, 32400, 44315649, 56606878084, 71306050492681, 89545789526100620 ]
[ "nonn" ]
A074676
[ 4, 2, 18, 10, 2, 10, 8, 6, 4, 6, 6, 14, 4, 42, 2, 10, 6, 6, 6, 2, 10, 2, 10, 14, 10, 30, 2, 10, 8, 12, 10, 8, 4, 8, 10, 2, 10, 8, 18, 4, 2, 4, 12, 8, 4, 12, 6, 12, 2, 18, 6, 16, 6, 2, 16, 6, 8, 6, 6, 4, 2, 12, 10, 2, 4, 6, 6, 14, 10, 8, 10, 8, 10, 20, 4, 8, 10, 8, 40, 12, 2, 4, 2, 10, 14, 4, 2 ]
[ "nonn", "base", "fini", "full" ]
A107017
[ 0, 0, 0, 1, 0, 1, 2, 0, 1, 2, 3, 3, 0, 1, 2, 3, 3, 5, 5, 5, 0, 1, 2, 3, 3, 5, 5, 5, 8, 8, 8, 8, 8, 0, 1, 2, 3, 3, 5, 5, 5, 8, 8, 8, 8, 8, 13, 13, 13, 13, 13, 13, 13, 13, 0, 1, 2, 3, 3, 5, 5, 5, 8, 8, 8, 8, 8, 13, 13, 13, 13, 13, 13, 13, 13, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 0, 1, 2 ]
[ "nonn" ]
A124067
[ 1, 2, 3, 4, 5, 6, 8, 11, 13, 19, 21, 22, 24, 27, 40, 44, 51, 62, 92, 139, 208, 224, 293, 307, 421, 509, 741, 861, 966, 989, 1046, 1100, 1102, 1109, 1182, 1547, 1766, 1813, 2048, 2720, 2726, 6012, 6790, 7132, 8301, 8699, 10062, 11102, 15827, 23918, 26747, 29389, 37229, 38211, 68726 ]
[ "nonn" ]
A254205
[ 0, 1, 1, 4, 4, 11, 16, 23, 23, 34, 34, 47, 58, 73, 73, 92, 92, 113, 130, 149, 149, 178, 197, 226, 249, 278, 278, 315, 315, 348, 377, 414, 447, 490, 490, 531, 568, 613, 613, 666, 666, 715, 758, 809, 809, 870, 917, 978, 1029, 1086, 1086, 1155, 1206, 1275, 1330, 1393 ]
[ "nonn" ]
A363115
[ 0, 1, 1, 4, 22, 168, 1616, 18800, 256432, 4012288, 70825344, 1392214272, 30157260288, 713680180224, 18319344307200, 506934586748928, 15043324048398336, 476540007615725600, 16050059458251915000, 572710950848334200000, 2.1582629580640556e+22, 8.565526617385385e+23 ]
[ "nonn" ]
A124272
[ 7, 1469991559, 2.9941816611633617e+21 ]
[ "nonn", "bref", "hard" ]
A271735
[ 1, 0, 28, 84, 840, 5082, 48279, 413127, 3093090, 26601575, 255431176, 2309491548, 20998179748, 209051155600, 2137087555220, 21652990622410, 230200208290745, 2517313465793819, 28104615964752330, 320432370881428540, 3760667223506993700, 45094960570293756000 ]
[ "nonn" ]
A263377
[ 11, 496, 34334, 2332320, 161833750, 11300297029, 790807552035, 55354924698596, 3874845084192752, 271238506175238940, 18986681172901990000, 1.3290673940073218e+21, 9.303471533675708e+22 ]
[ "nonn" ]
A374135
[ 1, 4, 7, 13, 16, 19, 25, 28, 31, 37, 43, 52, 61, 64, 67, 73, 76, 79, 91, 97, 100, 103, 109, 112, 121, 124, 127, 133, 139, 148, 151, 157, 163, 172, 175, 181, 193, 199, 208, 211, 217, 223, 229, 241, 244, 247, 256, 259, 268, 271, 277, 283, 289, 292, 301, 304, 307, 313, 316, 325, 331, 337, 343, 349, 364, 367, 373, 379 ]
[ "nonn" ]
A283772
[ 6, 7, 14, 15, 21, 22, 23, 29, 30, 31, 37, 38, 39, 45, 46, 47, 53, 54, 61, 62, 69, 70, 76, 77, 78, 84, 85, 86, 92, 93, 94, 100, 101, 102, 108, 109, 116, 117, 124, 125, 131, 132, 133, 139, 140, 141, 147, 148, 149, 155, 156, 157, 163, 164, 171, 172, 179, 180 ]
[ "nonn", "easy" ]
A176933
[ 2, 103, 10009, 100000081 ]
[ "nonn", "more" ]
A375523
[ 1, 3, 11, 25, 137, 49, 363, 761, 7129, 80939, 83249, 1109957, 1135697, 1159721, 2364487, 40916999, 13865893, 267536047, 271415923, 274943083, 6401288429, 6475652719, 32735212187, 33078431987, 300680459483, 43364113769, 1269032646901, 1280123549581, 40016557117411, 3666283538201 ]
[ "nonn", "frac" ]
A140828
[ 1, 2, 2, 3, 3, 4, 4, 5, 4, 6, 5, 7, 6, 7, 7, 7, 8, 8, 8, 9, 8, 10, 8, 11, 9, 11, 10, 11, 10, 11, 11, 12, 11, 13, 11, 14, 11, 15, 11, 16, 11, 17, 11, 18, 11, 18, 12, 18, 13, 18, 13, 18, 14, 18, 14, 19, 14, 20, 14, 20, 15, 19, 16, 20, 16, 20, 16, 21, 17, 21, 17, 21, 18, 21, 18, 22, 18 ]
[ "nonn" ]
A163333
[ 0, 7, 2, 3, 4, 5, 6, 1, 8, 69, 64, 71, 66, 67, 68, 63, 70, 65, 18, 25, 20, 21, 22, 23, 24, 19, 26, 29, 34, 27, 32, 31, 30, 35, 28, 33, 44, 37, 42, 41, 40, 39, 38, 43, 36, 47, 52, 45, 50, 49, 48, 53, 46, 51, 54, 61, 56, 57, 58, 59, 60, 55, 62, 15, 10, 17, 12, 13, 14, 9, 16, 11 ]
[ "nonn" ]
A337393
[ 1, 1, -5, -41, -125, 131, 3301, 15625, 16115, -254525, -1813055, -4617755, 14903725, 192390589, 767919595, -28588201, -18144634861, -105011253485, -184605603311, 1406589226405, 12610893954745, 40402054036345, -63847551719825, -1340432504352485, -6346702151685475 ]
[ "sign" ]
A099448
[ 1, 5, 19, 65, 216, 715, 2369, 7855, 26051, 86400, 286549, 950345, 3151831, 10453085, 34667784, 114976135, 381319781, 1264651795, 4194233399, 13910227200, 46133441401, 153002131805, 507433471819, 1682909416265, 5581389996216 ]
[ "easy", "nonn" ]
A366358
[ 1, 2, -5, 40, -319, 2908, -28151, 284908, -2977115, 31875709, -347884084, 3855802690, -43283239649, 491083601339, -5622489637406, 64877058557080, -753705528179423, 8808460811302729, -103487549564845200, 1221565052783161900, -14480208437556590000 ]
[ "sign" ]
A375984
[ 1, 2, 4, 8, 12, 16, 20, 25, 33, 49, 77, 121, 181, 258, 356, 488, 680, 976, 1432, 2113, 3089, 4449, 6329, 8961, 12729, 18226, 26292, 38056, 55012, 79200, 113548, 162425, 232401, 333201, 478853, 689177, 991949, 1426322, 2048244, 2938696, 4215552, 6049984, 8688816 ]
[ "nonn", "easy" ]
A259772
[ 3, 17, 19, 43, 53, 89, 107, 149, 293, 401, 439, 449, 659, 809, 821, 937, 1009, 1031, 1091, 1097, 1123, 1163, 1181, 1259, 1277, 1367, 1427, 1657, 1721, 1777, 1789, 1811, 1987, 2027, 2063, 2207, 2333, 2417, 2503, 2657, 2713, 3067, 3079, 3083, 3251, 3389, 3491, 3527 ]
[ "nonn" ]
A171228
[ 0, 1, 2, 9, 4, 25, 6, 2401, 512, 81, 10, 121, 12, 28561, 2744, 225, 16, 289, 18, 130321, 8000, 441, 22, 148035889, 7962624, 390625, 17576, 729, 28, 841, 30, 887503681, 33554432, 1185921, 39304, 1225, 36, 1874161, 54872, 1521, 40, 1681, 42, 3418801 ]
[ "nonn" ]
A099035
[ 1, 5, 15, 39, 95, 223, 511, 1151, 2559, 5631, 12287, 26623, 57343, 122879, 262143, 557055, 1179647, 2490367, 5242879, 11010047, 23068671, 48234495, 100663295, 209715199, 436207615, 905969663, 1879048191, 3892314111, 8053063679 ]
[ "nonn", "easy" ]
A103783
[ 5, 29, 419, 2309, 30029, 1021019, 19399379, 669278609, 38818159379, 601681470389, 14841476269619, 304250263527209, 235489703970060540, 1844669347765474300, 228124109340330330000, 2.4995884552004764e+22 ]
[ "nonn" ]
A040199
[ 14, 1, 1, 1, 2, 3, 1, 4, 9, 1, 1, 5, 3, 14, 3, 5, 1, 1, 9, 4, 1, 3, 2, 1, 1, 1, 28, 1, 1, 1, 2, 3, 1, 4, 9, 1, 1, 5, 3, 14, 3, 5, 1, 1, 9, 4, 1, 3, 2, 1, 1, 1, 28, 1, 1, 1, 2, 3, 1, 4, 9, 1, 1, 5, 3, 14, 3, 5, 1, 1, 9, 4, 1, 3, 2, 1, 1, 1, 28, 1, 1, 1, 2, 3, 1, 4, 9, 1, 1, 5 ]
[ "nonn", "cofr", "easy" ]
A061990
[ 0, 0, 0, 0, 2, 12, 46, 140, 344, 732, 1400, 2468, 4080, 6404, 9632, 13980, 19688, 27020, 36264, 47732, 61760, 78708, 98960, 122924, 151032, 183740, 221528, 264900, 314384, 370532, 433920, 505148, 584840, 673644, 772232, 881300, 1001568, 1133780, 1278704, 1437132 ]
[ "nonn", "easy" ]
A043419
[ 342, 685, 1028, 1371, 1714, 2057, 2106, 2155, 2204, 2253, 2302, 2351, 2358, 2365, 2372, 2379, 2386, 2393, 2394, 2395, 2396, 2397, 2398, 2399, 2743, 3086, 3429, 3772, 4115, 4458, 4507, 4556, 4605, 4654, 4703, 4752, 4759 ]
[ "nonn", "base" ]
A113638
[ 0, 1, 1, 2, 4, 4, 6, 6, 8, 9, 10, 10, 12, 12, 14, 15, 16, 16, 18, 18, 20, 21, 22, 22, 24, 25, 26, 27, 28, 28, 30, 30, 32, 33, 34, 35, 36, 36, 38, 39, 40, 40, 42, 42, 44, 45, 46, 46, 48, 49, 50, 51, 52, 52, 54, 55, 56, 57, 58, 58, 60, 60, 62, 63, 64, 65, 66, 66, 68, 69, 70, 70, 72 ]
[ "easy", "nonn" ]
A290726
[ 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12 ]
[ "nonn" ]
A256853
[ 6, 1, 8, 1, 8, 2, 4, 1, 9, 3, 7, 7, 2, 9, 0, 0, 1, 2, 7, 2, 1, 3, 7, 4, 4, 0, 5, 9, 6, 1, 9, 7, 6, 3, 6, 1, 4, 9, 4, 1, 7, 1, 3, 3, 4, 8, 1, 3, 4, 3, 5, 8, 0, 9, 8, 3, 8, 6, 8, 6, 4, 2, 5, 5, 6, 6, 9, 7, 7, 1, 0, 7, 1, 2, 3, 3, 5, 8, 4, 6, 6, 4, 7, 6, 6, 3, 5, 9, 5, 5, 3, 3, 8, 9, 0, 7, 9, 1, 8, 4, 0, 9, 9, 0, 2 ]
[ "nonn", "cons" ]
A261858
[ 757, 13671, 148638, 5623044, 19334910, 115231480, 522931570, 2868333476, 63481817735, 156363633615, 661651830728, 2317522429544, 8940138012274, 34465610055870, 703252581037436, 1456494080466446, 5428978793488341, 16082092961535516, 53836540488601700 ]
[ "nonn" ]
A022261
[ 1, 3922632451, 13848340811466705000, 4.835250588970777e+28, 1.6862046370671888e+38, 5.879531595803559e+47, 2.0500697629113862e+57 ]
[ "nonn" ]
A139445
[ 3, 4, 5, 10, 11, 13, 41, 55, 66, 94, 104, 325, 363, 424, 672, 734, 818, 1044, 1389, 1595, 1728, 2870, 3149, 3922, 5352, 9431, 11586, 13991, 17507 ]
[ "nonn", "more" ]
A237712
[ 0, 1, 1, 1, 0, 1, 3, 1, 3, 1, 2, 3, 4, 3, 3, 2, 2, 4, 4, 1, 5, 2, 2, 4, 2, 6, 8, 5, 6, 3, 4, 5, 2, 4, 3, 3, 8, 5, 8, 6, 4, 3, 10, 6, 6, 5, 1, 7, 4, 4, 6, 9, 6, 9, 5, 4, 6, 10, 3, 7, 7, 6, 3, 8, 13, 5, 8, 3, 9, 11, 4, 8, 6, 8, 11, 11, 11, 12, 13, 12, 10, 6, 7, 7, 4, 16, 10, 8, 9, 4, 6, 14, 11, 7, 4, 13, 10, 13, 8, 10 ]
[ "nonn" ]
A006544
[ 1, 1, 2, 3, 5, 8, 15, 27, 54, 110, 238, 526, 1211, 2839, 6825, 16655, 41315, 103663, 263086, 673604, 1739155, 4521632, 11831735, 31134338, 82352098, 218837877, 584018065, 1564679863, 4207224730, 11350583175, 30718054693, 83373960954, 226907180850, 619118327796 ]
[ "nonn" ]
A218942
[ 1, 1, 1, 2, 9, 37, 207, 1192, 11449, 93673, 892783, 8534308, 148561283, 1740198891 ]
[ "nonn", "more" ]
A373562
[ 0, 3, 2, 6, 0, 9, 2, 6, 1, 7, 0, 9, 0, 2, 7, 2, 0, 2, 9, 0, 8, 1, 1, 2, 4, 3, 6, 0, 2, 7, 1, 5, 8, 5, 8, 4, 6, 2, 7, 9, 3, 1, 4, 0, 3, 7, 0, 0, 9, 6, 4, 1, 0, 5, 0, 7, 3, 3, 2, 9, 4, 2, 5, 4, 5, 1, 6, 0, 1, 5, 1, 3, 5, 5, 4, 8, 7, 6, 0, 3, 6, 6, 2, 1, 2, 4, 6, 4, 4, 0, 4, 5, 7, 9, 3, 8, 0, 5, 9, 1, 5, 4, 0, 1, 9, 3 ]
[ "nonn", "cons" ]
A087500
[ 1, 0, 9, 1, 8, 7, 7, 0, 4, 1, 2, 0, 9, 6, 1, 2, 6, 7, 8, 2, 7, 6, 1, 1, 0, 9, 7, 9, 4, 7, 7, 6, 3, 8, 2, 5, 6, 4, 9, 3, 2, 7, 2, 6, 5, 1, 4, 2, 9, 6, 5, 6, 2, 7, 2, 7, 1, 0, 7, 5, 4, 9, 1, 3, 5, 6, 9, 7, 3, 5, 1, 3, 9, 7, 0, 7, 2, 9, 8, 9, 0, 6, 3, 3, 6, 6, 6, 5, 3, 0, 6, 6, 5, 4, 4, 9, 4, 0, 9, 2 ]
[ "nonn", "cons" ]
A057965
[ 1, 55, 10, 1815, 660, 65, 46585, 25410, 5005, 350, 1024870, 745360, 220220, 30800, 1701, 20292426, 18447660, 7267260, 1524600, 168399, 7770, 372027810, 405848520, 199849650, 55902000, 9261945, 854700, 34105, 6430766430 ]
[ "easy", "nonn", "tabl" ]
A259414
[ 2080, 414505, 28815436, 49317346, 3428789455, 698283666730, 48548229019381, 83089887991201, 5776831256176630, 1176469718198438700, 81794153348207150000, 139990009467226930000, 9.732816854065395e+21, 1.9821185341594677e+24, 1.3780695314931754e+26 ]
[ "nonn", "easy" ]
A086213
[ 1, 8, 27, 36, 71, 134, 241, 446, 821, 1508, 2775, 5104, 9387, 17266, 31757, 58410, 107433, 197600, 363443, 668476, 1229519, 2261438, 4159433, 7650390, 14071261, 25881084, 47602735, 87555080, 161038899, 296196714, 544790693, 1002026306 ]
[ "nonn", "easy" ]
A061023
[ 0, 0, 0, 3, 3, 4, 4, 1, 1, 1, 1, 1, 1, 8, 8, 8, 8, 8, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 22, 22, 22, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 17, 17, 17, 17, 17, 17 ]
[ "easy", "nice", "nonn", "look" ]
A303457
[ 4, 32, 232, 1690, 12340, 90112, 658204, 4807732, 35118024, 256519346, 1873747524, 13686804048, 99975389852, 730271188300, 5334272943080, 38964248230442, 284614727917460, 2078971032009920, 15185864006789660, 110925290484682720 ]
[ "nonn" ]
A170189
[ 1, 36, 1260, 44100, 1543500, 54022500, 1890787500, 66177562500, 2316214687500, 81067514062500, 2837362992187500, 99307704726562500, 3475769665429687300, 121651938290039060000, 4.257817840151367e+21, 1.4902362440529784e+23 ]
[ "nonn" ]
A357551
[ 1, -1, 1, 107, 913, -131449, -46887791, 4109309363, 406392278497, 295047521858639, 5615320767861601, -121434328185686250000, 1.378891505704947e+22, 3.074383793976954e+25, -1.0050889695209166e+28, -2.3323935534535268e+30 ]
[ "sign" ]
A053571
[ 0, 0, 0, 0, 0, 2, 0, 2, 2, 8, 0, 14, 0, 16, 16, 16, 0, 36, 0, 38, 32, 44, 0, 68, 20, 62, 40, 78, 0, 136, 0, 80, 82, 110, 78, 170, 0, 138, 116, 190, 0, 264, 0, 192, 198, 204, 0, 310, 66, 294, 196, 272, 0, 398, 182, 358, 248, 328, 0, 584, 0, 372, 372, 372, 248, 658, 0, 468 ]
[ "nonn" ]
A266918
[ 1, 4, 9, 16, 25, 27, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 243, 256, 289, 324, 343, 361, 400, 441, 484, 529, 576, 625, 676, 729, 784, 841, 900, 961, 1024, 1089, 1156, 1225, 1296, 1369, 1444, 1521, 1600, 1681, 1728, 1764, 1849, 1936, 2025, 2116, 2187, 2197, 2209, 2304, 2401, 2500 ]
[ "nonn" ]
A182478
[ 1, 2, 145, 40585, 6402374184741226, 121645100891988860, 121666023198802100, 121666023198802140, 2432902008177819600, 2432902008217006000, 2432902008656812500, 4872206390059820000 ]
[ "nonn", "base", "hard" ]
A125575
[ 4, 9, 2, 4, 1, 1, 2, 3, 5, 8, 9, 1, 1, 1, 2, 2, 3, 3, 4, 5, 5, 6, 6, 7, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 9, 9, 9, 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 ]
[ "easy", "nonn", "base" ]
A297293
[ 2, 8, 10, 18, 24, 26, 33, 35, 42, 45, 54, 56, 63, 66, 74, 76, 82, 88, 94, 96, 102, 105, 114, 116, 123, 125, 134, 136, 142, 145, 154, 156, 162, 168, 170, 178, 180, 186, 194, 196, 202, 208, 214, 216, 222, 225, 234, 236, 243, 246, 254, 256, 262, 265, 274, 276 ]
[ "nonn", "easy" ]
A369944
[ 1, 1, 3, 44, 1292, 43958, 2204010 ]
[ "nonn", "hard", "more" ]
A285058
[ 1, 2, 5, 7, 10, 12, 13, 17, 24, 25, 26, 29, 34, 35, 36, 37, 38, 43, 47, 48, 49, 50, 53, 55, 58, 59, 60, 65, 67, 72, 73, 74, 85, 89, 91, 96, 97, 103, 106, 108, 109, 110, 113, 118, 120, 125, 127, 130, 137, 139, 144, 145, 146, 149, 156, 157, 158, 163, 168, 169, 170, 173, 175 ]
[ "nonn" ]
A175232
[ 5, 2, 2, 3413, 50069, 2, 2, 7, 10405071317, 2, 2, 88799, 3, 2, 2, 3, 3, 2, 2, 5, 3, 2, 2, 3, 7, 2, 2, 7, 2.084924134437041e+44, 2, 2, 3, 17, 2, 2, 5, 61, 2, 2, 71, 11, 2, 2, 11, 7, 2, 2, 5, 3, 2, 2, 3, 3, 2, 2, 23, 3, 2, 2, 3, 44818693, 2, 2, 5 ]
[ "nonn" ]
A179769
[ 0, 2, 2, 1, 0, 1, 0, 1, 1, 2, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 3, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 2, 0, 0, 2, 0, 1, 0, 1, 0, 0, 0, 0, 3, 1, 1, 0, 0, 0, 0, 1, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 3, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1 ]
[ "nonn" ]
A244405
[ 1, 2, 6, 17, 50, 143, 416, 1199, 3474, 10048, 29112, 84347, 244630, 709767, 2060754, 5986231, 17399060, 50595235, 147199567, 428448576, 1247613511, 3634451971, 10591746511, 30878554201, 90053295475, 262716880036, 766682072349, 2238077375703, 6535237181868 ]
[ "nonn" ]
A135680
[ 1, 2, 3, 4, 5, 4, 7, 4, 5, 4, 11, 4, 13, 4, 5, 4, 17, 4, 19, 4, 5, 4, 23, 4, 5, 4, 5, 4, 29, 4, 31, 4, 5, 4, 5, 4, 37, 4, 5, 4, 41, 4, 43, 4, 5, 4, 47, 4, 5, 4, 5, 4, 53, 4, 5, 4, 5, 4, 59, 4, 61, 4, 5, 4, 5, 4, 67, 4, 5, 4, 71, 4, 73 ]
[ "nonn", "easy" ]
A045372
[ 2, 7, 11, 17, 31, 37, 41, 47, 61, 67, 71, 97, 101, 107, 127, 131, 137, 151, 157, 167, 181, 191, 197, 211, 227, 241, 251, 257, 271, 277, 281, 307, 311, 317, 331, 337, 347, 367, 397, 401, 421, 431, 457, 461, 467 ]
[ "nonn", "easy" ]
A019988
[ 1, 2, 5, 16, 55, 222, 950, 4265, 19591, 91678, 434005, 2073783, 9979772, 48315186, 235088794, 1148891118, 5636168859, 27743309673 ]
[ "nonn", "nice", "hard", "more" ]
A128619
[ 1, 0, 1, 2, 0, 2, 0, 3, 0, 3, 5, 0, 5, 0, 5, 0, 8, 0, 8, 0, 8, 13, 0, 13, 0, 13, 0, 13, 0, 21, 0, 21, 0, 21, 0, 21, 34, 0, 34, 0, 34, 0, 34, 0, 34, 0, 55, 0, 55, 0, 55, 0, 55, 0, 55 ]
[ "nonn", "tabl" ]
A022103
[ 1, 13, 14, 27, 41, 68, 109, 177, 286, 463, 749, 1212, 1961, 3173, 5134, 8307, 13441, 21748, 35189, 56937, 92126, 149063, 241189, 390252, 631441, 1021693, 1653134, 2674827, 4327961, 7002788, 11330749, 18333537, 29664286, 47997823, 77662109, 125659932, 203322041, 328981973 ]
[ "nonn", "easy" ]
A273740
[ 1, 5, 21, 65, 337, 1185, 5073, 20177, 82617, 329329, 1324609, 5310393, 21308489, 85371393, 341750409, 1367530569 ]
[ "nonn", "more" ]
A288400
[ 1, 1, 4, 3, 24, 7, 112, 31, 448, 31, 1664, 639, 4608, 6655, 16384, 12287, 65536, 89599, 262144, 151551, 1572864, 483327, 5324800, 1146879, 22282240, 22478847, 83886080, 88080383, 352321536, 29360127, 1283457024, 1124073471, 4462739456, 2320891903 ]
[ "nonn", "easy" ]
A351619
[ 0, 1, -1, 1, -1, 0, -1, 1, -1, 0, -1, 0, -1, 0, -2, 1, -1, 0, -1, 0, -2, 0, -1, 0, -1, 0, -1, 0, -1, -1, -1, 1, -2, 0, -2, 0, -1, 0, -2, 0, -1, -1, -1, 0, -2, 0, -1, 0, -1, 0, -2, 0, -1, 0, -2, 0, -2, 0, -1, -1, -1, 0, -2, 1, -2, -1, -1, 0, -2, -1, -1, 0, -1, 0, -2, 0, -2, -1, -1, 0, -1, 0, -1, -1, -2, 0, -2, 0, -1, -1, -2, 0, -2, 0, -2, 0, -1, 0, -2, 0, -1 ]
[ "sign" ]
A173448
[ 13, 151, 353, 139, 101, 70451, 97, 15193, 3821, 9319, 7717, 103619, 10883, 18353, 108821, 701, 10091, 99251, 78497, 3559, 930043, 99787, 18671, 12251, 711751, 9293, 10861, 121921, 103099, 986189, 74287, 796567, 323003, 108707, 365779, 192377, 393901, 380251, 98479, 114343, 329729 ]
[ "nonn", "base" ]
A239154
[ 88, 88, 175471, 3313304, 821135900, 42600989632, 5469574400477, 407538214264758, 41833224277157840, 3546725280596974600, 336756665790055000000, 2.9889788806323354e+22 ]
[ "nonn" ]
A339729
[ 25, 55, 85, 115, 155, 187, 253, 275, 341, 407, 527, 551, 559, 575, 851, 925, 1199, 1265, 1633, 1775, 1807, 1919, 1961, 2123, 2507, 2635, 2641, 2725, 3401, 3553, 3959, 4033, 4381, 4807, 5461, 5777, 5797, 5977, 5983, 6049, 6325, 6439, 6479, 6575, 7645, 7999, 8639 ]
[ "nonn" ]
A337709
[ 1, 10, 14, 22, 26, 30, 33, 34, 38, 39, 46, 50, 51, 57, 58, 62, 68, 69, 74, 76, 82, 86, 87, 90, 92, 93, 94, 98, 106, 111, 116, 118, 122, 123, 124, 129, 132, 134, 141, 142, 145, 146, 148, 150, 154, 155, 158, 159, 160, 164, 165, 166, 172, 174, 177, 178, 182, 183, 185 ]
[ "nonn" ]
A178928
[ 10, 121, 123, 1234, 123451, 1234561, 1234567, 123456782, 12345678911, 123456789101, 123456789101117, 12345678910111228, 123456789101112130, 123456789101112130000, 1.2345678910111212e+21 ]
[ "nonn", "easy" ]
A297317
[ 1, 65, 609, 3808, 35476, 340825, 2997197, 26513027, 237701708, 2127406714, 19008671433, 169867295652, 1518292533694, 13571135299252, 121300487637606, 1084181857884980, 9690470338269840, 86614217136138560, 774163716085023900 ]
[ "nonn" ]
A286515
[ 1, 1, 1, 2, 1, 6, 1, 6, 1, 10, 1, 6, 1, 210, 5, 6, 1, 30, 5, 210, 7, 330, 5, 30, 1, 546, 7, 14, 1, 30, 1, 462, 77, 3570, 35, 6, 1, 51870, 455, 210, 7, 2310, 55, 2310, 7, 4830, 35, 210, 1, 6630, 221, 858, 11, 330, 55, 798, 19, 870, 5, 30, 1, 930930, 5005, 4290 ]
[ "nonn" ]
A214438
[ 1, 1, 2, 1, 1, 0, -1, -1, -2, -1, -1, 0, 1, 1, 2, 1, 1, 0, -1, -1, -2, -1, -1, 0, 1, 1, 2, 1, 1, 0, -1, -1, -2, -1, -1, 0, 1, 1, 2, 1, 1, 0, -1, -1, -2, -1, -1, 0, 1, 1, 2, 1, 1, 0, -1, -1, -2, -1, -1, 0, 1, 1, 2, 1, 1, 0, -1, -1, -2, -1, -1, 0, 1, 1, 2, 1, 1, 0, -1, -1, -2, -1 ]
[ "sign", "frac" ]
A349850
[ 3, 9, 6, 8, 7, 4, 8, 0, 0, 6, 9, 0, 3, 9, 1, 4, 8, 5, 2, 1, 7, 1, 0, 6, 3, 6, 4, 0, 6, 1, 9, 9, 8, 5, 6, 8, 8, 6, 9, 8, 4, 2, 4, 3, 6, 3, 9, 6, 2, 2, 4, 8, 4, 3, 6, 7, 8, 3, 3, 9, 6, 6, 4, 2, 9, 4, 2, 1, 5, 4, 5, 3, 6, 7, 0, 6, 1, 8, 1, 1, 9, 9, 3, 8, 0, 6, 6, 8, 2, 4, 2, 1, 7, 6, 1, 5, 7, 1, 0, 7, 5, 2, 1, 9, 8 ]
[ "nonn", "cons" ]
A307578
[ 0, 0, 1, 2, 4, 10, 25, 62, 159, 414, 1087, 2886, 7734, 20878, 56743, 155154, 426492, 1177938, 3267359, 9098102, 25423124, 71268382, 200371507, 564861178, 1596327999, 4521633466, 12834780857, 36503642746, 104011176114, 296870510994, 848691054657, 2429877628398 ]
[ "nonn" ]
A245219
[ 3, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2, 2, 3, 2, 3, 2 ]
[ "nonn", "cofr", "easy" ]
A211864
[ 1, 3, 9, 11, 17, 19, 41, 43, 81, 131, 169, 219, 241, 419, 681, 651, 849, 1203, 2441, 1867, 4369, 3027, 5625, 12475, 15457, 26403, 26553, 48795, 54561, 99667, 80345, 158731, 221313, 332467, 460857, 375451, 569345, 987267, 1181145, 1594971, 1924001, 4458531 ]
[ "nonn", "base", "easy" ]
A237951
[ 256, 1460, 1460, 8291, 12218, 8291, 50268, 102396, 102396, 50268, 303996, 945688, 1268436, 945688, 303996, 1843152, 8557942, 17612024, 17612024, 8557942, 1843152, 11184876, 78337964, 235951750, 386513430, 235951750, 78337964, 11184876 ]
[ "nonn", "tabl" ]
A334171
[ 0, 1, 1, 2, 6, 4, 5, 4, 6, 5, 5, 8, 9, 3, 6, 5, 6, 10, 8, 3, 8, 7, 6, 11, 11, 4, 9, 7, 5, 11, 9, 7, 13, 6, 5, 12, 12, 7, 14, 12, 5, 14, 13, 5, 15, 11, 6, 11, 6, 6, 15, 12, 8, 14, 13, 9, 20, 16, 7, 20, 14, 5, 16, 8, 7, 17, 13, 6, 11, 15, 10, 21, 17, 5, 19, 11, 10 ]
[ "nonn", "easy" ]
A003875
[ 1, 1, 10, 10, 44, 44, 45, 45, 110, 110, 120, 120, 132, 132, 165, 165, 210, 210, 231, 231, 252, 330, 330, 385, 385, 462, 462, 550, 550, 594, 594, 660, 660, 693, 693, 825, 825, 924, 924, 990, 990, 990, 990, 1100, 1100, 1155, 1155, 1188, 1232, 1232, 1320, 1320, 1540, 1540, 2310, 2310 ]
[ "nonn", "fini", "full" ]
A233709
[ 96, 2624, 136960, 18407992, 5886720368, 4918448758808, 10112718125166672, 53740179167608100000 ]
[ "nonn" ]
A273439
[ 1, 108, 7710, 469590, 26750823, 1488656598, 82839614429, 4672159568505, 269240651261153, 15931093968844912, 970803214965495000, 61032579212845015000, 3.962346372673358e+21, 2.657580424593952e+23, 1.8415788640437877e+25, 1.3182107273911123e+27 ]
[ "nonn" ]
A337159
[ 0, 13, 14, 15, 16, 17, 18, 19, 20, 2, 40, 1, 3, 4, 21, 6, 33, 8, 51, 53, 60, 11, 80, 9, 100, 7, 120, 5, 140, 10, 160, 12, 157, 41, 163, 39, 23, 37, 31, 35, 49, 73, 67, 71, 85, 29, 103, 27, 121, 47, 141, 25, 137, 43, 143, 61, 144, 59, 145, 57, 45, 55, 63, 93 ]
[ "nonn", "look", "base" ]
A288559
[ 1, 1, 3, 14, 173, 16977, 17552169 ]
[ "nonn", "more" ]
A315161
[ 1, 6, 10, 14, 16, 22, 26, 34, 36, 46, 46, 54, 52, 62, 62, 74, 72, 86, 82, 94, 84, 102, 98, 114, 108, 126, 118, 134, 116, 142, 134, 154, 144, 166, 154, 174, 148, 182, 170, 194, 180, 206, 190, 214, 180, 222, 206, 234, 216, 246 ]
[ "nonn" ]
A209679
[ 1, 15, 1243, 2143147, 6713848491, 336865786047147, 29579506766774450000, 4.155707725387007e+25, 1.0217322750613147e+32, 4.019288788864556e+39 ]
[ "nonn" ]
A057651
[ 1, 7, 37, 187, 937, 4687, 23437, 117187, 585937, 2929687, 14648437, 73242187, 366210937, 1831054687, 9155273437, 45776367187, 228881835937, 1144409179687, 5722045898437, 28610229492187, 143051147460937, 715255737304687, 3576278686523437, 17881393432617188, 89406967163085940 ]
[ "nonn", "easy" ]
A336238
[ 3, 5, 8, 2, 7, 13, 20, 5, 14, 7, 18, 3, 16, 8, 23, 39, 56, 28, 47, 67, 88, 4, 27, 9, 34, 17, 44, 11, 40, 4, 35, 67, 100, 50, 10, 5, 42, 21, 7, 47, 88, 44, 87, 131, 176, 88, 135, 45, 94, 47, 98, 49, 102, 17, 72, 9, 3, 61, 120, 2, 63, 125, 188, 47, 112, 56, 123, 191 ]
[ "nonn", "easy" ]
A098114
[ 120, 315, 4752, 7744, 24960, 57915, 3386880 ]
[ "base", "more", "nonn" ]
A091608
[ 1, 0, 1, 1, 2, 3, 5, 5, 9, 11, 16, 20, 29, 35, 49, 61, 81, 101, 133, 163, 211, 260, 329, 404, 508, 619, 770, 936, 1152, 1395, 1706, 2053, 2495, 2994, 3612, 4318, 5185, 6171, 7374, 8748, 10403, 12300, 14570, 17165, 20257, 23797, 27977, 32769, 38405, 44850 ]
[ "nonn" ]
A347539
[ 1, 2, 3, 4, 5, 7, 6, 8, 11, 17, 13, 10, 19, 14, 9, 12, 16, 31, 59, 41, 29, 22, 67, 43, 34, 23, 37, 26, 15, 20, 53, 38, 21, 28, 18, 24, 32, 127, 277, 179, 109, 79, 62, 331, 191, 139, 118, 83, 157, 101, 82, 47, 71, 58, 33, 44, 241, 163, 134, 73, 107, 86, 51, 68 ]
[ "nonn" ]
A109576
[ 0, 1, -6, 54, -552, 6840, -97200, 1577520, -28667520, 578067840, -12798777600, 308836281600, -8065907942400, 226719600307200, -6824229456844800, 219010610827008000, -7465397891567616000, 269363867734241280000, -1.0256545055212904e+22 ]
[ "sign" ]
A237614
[ 1, 2, 2, 2, 6, 11, 11, 7, 3, 3, 3, 8, 13, 13, 8, 14, 14, 14, 33, 33, 9, 15, 9, 4, 4, 42, 22, 22, 43, 4, 36, 99, 10, 10, 10, 10, 38, 38, 38, 38, 31, 24, 17, 17, 17, 62, 24, 194, 55, 80, 11, 40, 11, 11, 11, 11, 11, 57, 11, 11, 33, 18, 18, 83, 164, 5, 5, 5, 156, 5 ]
[ "nonn" ]
A000246
[ 1, 1, 1, 3, 9, 45, 225, 1575, 11025, 99225, 893025, 9823275, 108056025, 1404728325, 18261468225, 273922023375, 4108830350625, 69850115960625, 1187451971330625, 22561587455281876, 428670161650355650, 9002073394657468000, 189043541287806830000 ]
[ "nonn", "easy" ]
A374835
[ 0, 1, 0, 4, 14, 72, 370, 1995, 11064, 62774, 362614, 2125479, 12610410, 75584363, 457000668, 2783991972, 17071362986, 105287143740, 652687596388, 4064618917998, 25416557913498, 159523021737403, 1004594882114020, 6345859437931884, 40198433775513520 ]
[ "nonn" ]