id
stringlengths
7
11
seq
listlengths
1
347
keywords
listlengths
1
8
A121253
[ 0, 0, 0, 1, 1, 1, 2, 3, 4, 9, 28, 113, 1018, 28505, 3221066, 3279045189, 93469183112446, 301070407771274000000, 9.872234721526642e+29, 9.227497149154211e+43 ]
[ "nonn", "easy" ]
A337423
[ 7, 37, 67, 337, 607, 3037, 15187, 27337, 49207, 683437, 0, 131835937, 659179687, 19929037, 35872267, 228881835937, 2491129687, 0, 0, 311391210937, 12013549804687, 0, 235357947067, 1176789735337, 0, 10591107618037, 52955538090187, 5675104819335937, 608185958862...
[ "nonn" ]
A067691
[ 0, 1, 2, 9, 1000, 1004006004001, 1.0201911448656234e+60 ]
[ "nonn" ]
A204338
[ 2968107693, 2182013404785, 1056518851863222, 294839891112677000, 51487565527487420000 ]
[ "nonn" ]
A212275
[ 1, 2, 3, 1, 5, 24, 7, 8, 1, 10, 99, 12, 13, 56, 135, 4, 425, 8, 4275, 5, 84, 352, 368, 6, 1, 234, 12, 28, 116, 120, 124, 2, 33, 306, 315, 4, 37, 3800, 156, 10, 6929, 42, 1075, 176, 45, 184, 47, 3, 1, 2, 204, 117, ...
[ "nonn", "easy" ]
A265157
[ 0, 0, 0, 1, 1, 0, 1, 1, 0, 3, 2, 3, 3, 2, 2, 5, 5, 4, 3, 6, 4, 6, 5, 3, 1, 4, 2, 7, 8, 6, 9, 8, 8, 6, 7, 7, 4, 5, 8, 8, 11, 10, 7, 10, 10, 7, 9, 7, 8, 9, 11, 15, 13, 9, 9, 11, 13, 15, 12, 12, 15, ...
[ "nonn", "base" ]
A075195
[ 1, 2, 1, 3, 3, 1, 4, 6, 4, 1, 5, 10, 11, 6, 1, 6, 15, 24, 24, 8, 1, 7, 21, 45, 70, 51, 14, 1, 8, 28, 76, 165, 208, 130, 20, 1, 9, 36, 119, 336, 629, 700, 315, 36, 1, 10, 45, 176, 616, 1560, 2635, 2344, 834, 60,...
[ "nonn", "tabl" ]
A297823
[ 0, 1, 1, 1, 4, 1, 2, 17, 17, 2, 3, 49, 48, 49, 3, 5, 166, 146, 146, 166, 5, 8, 573, 399, 466, 399, 573, 8, 13, 1933, 1114, 1395, 1395, 1114, 1933, 13, 21, 6538, 3124, 4306, 4444, 4306, 3124, 6538, 21, 34, 22165, 8861, 13...
[ "nonn", "tabl" ]
A045449
[ 5, 11, 13, 19, 41, 47, 53, 61, 67, 83, 89, 97, 103, 109, 131, 137, 139, 151, 167, 173, 179, 181, 193, 223, 229, 251, 257, 263, 271, 277, 293, 307, 313, 347, 349, 383, 389, 397, 419, 431, 433, 439, 461, 467, 487 ]
[ "nonn", "easy" ]
A077463
[ 0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 3, 4, 4, 5, 5, 5, 6, 6, 6, 7, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 9, 9, 9, 10, 10, 11, 11, 11, 12, 13, 13, 14, 13, 13, 12, ...
[ "nonn" ]
A001282
[ 17, 259, 2770, 27978, 294602, 3331790, 40682144, 535206440, 7557750635, 114101726625, 1834757172082, 31313852523634, 565434670633580, 10771030900532868, 215881317066455230, 4541623615098815500 ]
[ "nonn" ]
A355316
[ 0, 10, 1110, 333110, 333322110, 4444322222110, 444441355555222100, 5.555541113555555e+24, 5.555551433311366e+33, 6.666665111433332e+45, 6.666666153331144e+61 ]
[ "base", "nonn" ]
A098182
[ 1, 1, 3, 9, 25, 69, 191, 529, 1465, 4057, 11235, 31113, 86161, 238605, 660767, 1829857, 5067409, 14033137, 38861859, 107619849, 298030825, 825334485, 2285592479, 6329473777, 17528163337, 48540608713, 134423136579 ]
[ "easy", "nonn" ]
A305993
[ 2, 5, 7, 13, 1093, 797161 ]
[ "nonn", "base", "more", "hard" ]
A352260
[ 25, 52, 125, 152, 205, 215, 250, 251, 455, 502, 512, 520, 521, 545, 554, 1025, 1052, 1125, 1152, 1205, 1215, 1250, 1251, 1455, 1502, 1512, 1520, 1521, 1545, 1554, 2005, 2015, 2050, 2051, 2105, 2115, 2150, 2151, 2255, 2500, 2501, 2510,...
[ "nonn", "base" ]
A065803
[ 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1...
[ "easy", "nonn" ]
A032444
[ 1, 16, 144, 96, 1200, 144, 2352, 384, 1296, 1200, 5808, 288, 8112, 2352, 3600, 1536, 13872, 1296, 17328, 2400, 7056, 5808, 25392, 1152, 30000, 8112, 11664, 4704, 40368, 3600, 46128, 6144, 17424, 13872, 58800, 2592, 65712, 17328, 24336, 96...
[ "nonn", "easy" ]
A347303
[ 0, 1, 3, 15, 21, 183, 309, 1347, 4041, 17163, 31329, 149427, 171081, 1233963, 4422609, 13628187, 30794481, 116887923, 154627929, 929468907, 3253991841, 10227560643, 26026830729, 88788949947, 255658392081, 820517465043, 2461552395129, 7545284051787, 20547702892...
[ "nonn" ]
A299443
[ 1, 3, 10, 35, 127, 474, 1807, 6999, 27436, 108541, 432493, 1733174, 6977777, 28200413, 114338320, 464857475, 1894420045, 7736238420, 31649963275, 129693294945, 532216500532, 2186868151211, 8996351889535, 37048736568870, 152722557174139, 630116066189691 ]
[ "nonn" ]
A135013
[ 1, 2, 5, 6, 11, 14, 21, 22, 31, 36, 47, 50, 63, 70, 85, 86, 103, 112, 131, 136, 157, 168, 191, 194, 219, 232, 259, 266, 295, 310, 341, 342, 375, 392, 427, 436, 473, 492, 531, 536, 577, 598, 641, 652, 697, 720, 767, 770, ...
[ "nonn" ]
A166850
[ 3, 4, 56, 128, 197, 331 ]
[ "base", "hard", "more", "nonn" ]
A149826
[ 1, 2, 4, 10, 28, 85, 275, 924, 3161, 11123, 40356, 148994, 555317, 2099039, 8057473, 31247345, 122019881, 480549169, 1909455313, 7638161881, 30713415080, 124209720711, 505237712256, 2064851613757, 8472358195113, 34907360687287, 144413933270171, 599556168765568, ...
[ "nonn", "walk" ]
A376384
[ 18, 24, 30, 36, 40, 42, 48, 50, 54, 56, 60, 66, 70, 72, 75, 78, 80, 84, 88, 90, 96, 98, 100, 102, 104, 105, 108, 110, 112, 114, 120, 126, 130, 132, 135, 136, 138, 140, 144, 147, 150, 152, 154, 156, 160, 162, 165, 168, 17...
[ "nonn", "easy" ]
A179944
[ 1, 3, 7, 17, 47, 148, 518, 1977, 8138, 35879, 168500, 838944, 4409957, 24385913, 141412615, 857611641, 5426144191, 35739397738, 244573978098, 1735854397529, 12757309001222, 96941738970957, 760649367654460, 6155205917196408, 51308394497243470, 440110582561558850 ]
[ "nonn" ]
A080874
[ 1, 1, 3, 8, 29, 79, 287, 782, 2841, 7741, 28123, 76628, 278389, 758539, 2755767, 7508762, 27279281, 74329081, 270037043, 735782048, 2673091149, 7283491399, 26460874447, 72099131942, 261935653321, 713707828021, 2592895658763 ]
[ "nonn" ]
A312840
[ 1, 4, 9, 11, 18, 19, 26, 28, 33, 38, 39, 48, 47, 56, 56, 62, 67, 67, 78, 75, 86, 84, 91, 96, 95, 108, 103, 116, 112, 120, 125, 123, 138, 131, 146, 140, 149, 154, 151, 168, 159, 176, 168, 178, 183, 179, 198, 187, 206, 1...
[ "nonn" ]
A115796
[ 0, 1, 10, 100, 1000, 10000, 10001, 11101, 100000, 100001, 100010, 111001, 111010, 1000000, 1000001, 1000010, 1000100, 1011101, 1110010, 1110100, 10000000, 10000001, 10000010, 10000100, 10001000, 10111001, 10111010, 11100100 ]
[ "nonn", "base" ]
A330967
[ 2, 5, 10, 44, 104, 656, 2624, 15744, 67584, 694272, 2777088, 34062336, 213221376, 1758855168, 14070841344, 228530847744, 1371185086464, 25007480635392, 200059845083136, 2447683608379392, 25040421692375040, 556525133318062100, 4452201066544496600, 89044021330889930000 ]
[ "nonn" ]
A094765
[ 0, 1, 4, 7, 4, 7, 10, 13, 16, 9, 12, 15, 18, 21, 24, 27, 16, 19, 22, 25, 28, 31, 34, 37, 40, 25, 28, 31, 34, 37, 40, 43, 46, 49, 52, 55, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 49, 52, 55, 58, 61, ...
[ "nonn" ]
A035229
[ 1, 2, 0, 3, 0, 0, 0, 4, 1, 0, 2, 0, 0, 0, 0, 5, 2, 2, 2, 0, 0, 4, 2, 0, 1, 0, 0, 0, 0, 0, 2, 6, 0, 4, 0, 3, 2, 4, 0, 0, 0, 0, 2, 6, 0, 4, 1, 0, 1, 2, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 2, 4, 0, 7...
[ "nonn", "easy", "mult" ]
A293143
[ 4, 16, 96, 688, 5280, 41584, 330720, 2639920, 21101856, 168762352, 1349941344, 10799058352, 86391049632, 691124145520, 5528980409568, 44231805012784, 353854325311008, 2830834258114288, 22646673031792990, 181173381154980030 ]
[ "nonn", "easy" ]
A017964
[ 1, 4, 20, 89, 400, 1788, 8000, 35777, 160000, 715541, 3200000, 14310835, 64000000, 286216701, 1280000000, 5724334022, 25600000000, 114486680447, 512000000000, 2289733608959, 10240000000000, 45794672179195 ]
[ "nonn" ]
A092348
[ 0, 6, 24, 66, 120, 240, 336, 570, 744, 1116, 1320, 2016, 2184, 3072, 3504, 4650, 4896, 6774, 6840, 9156, 9600, 11952, 12144, 16320, 15720, 19740, 20400, 25056, 24360, 31680, 29760, 37386, 37248, 44172, 43296, 55170, 50616, 61680, 61488, 7...
[ "nonn", "easy" ]
A119942
[ 7, 256, 300, 16000, 67375, 627200, 642096, 79027200, 80041500, 13660416000, 13766266800, 13851661824, 55686205575, 16160272128000, 16216384184000, 5871257725132800, 5885894170172016, 5898489903820800 ]
[ "nonn", "easy" ]
A250342
[ 424, 21523, 266448, 1789193, 8357144, 30606683, 94080768, 253309665, 614750056, 1372133587, 2858593552, 5620837833, 10521617432, 18877802939, 32642526080, 54641070081, 88871500968, 140882422099, 218241706192, 331111612873 ]
[ "nonn" ]
A001421
[ 1, 120, 83160, 81681600, 93699005400, 117386113965120, 155667030019300800, 214804163196079140000, 3.052400722166784e+23, 4.436557678450744e+26, 6.564863127957135e+29, 9.856468730566806e+32, 1.4977862503889512e+36 ]
[ "nonn" ]
A354354
[ 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0...
[ "nonn", "easy", "mult" ]
A034679
[ 1, 33, 244, 1025, 3126, 8052, 16808, 32769, 59050, 103158, 161052, 250100, 371294, 554664, 762744, 1048577, 1419858, 1948650, 2476100, 3204150, 4101152, 5314716, 6436344, 7995636, 9765626, 12252702, 14348908, 17228200, 20511150, 25170552 ]
[ "nonn", "mult" ]
A047983
[ 0, 0, 1, 0, 2, 0, 3, 1, 1, 2, 4, 0, 5, 3, 4, 0, 6, 1, 7, 2, 5, 6, 8, 0, 2, 7, 8, 3, 9, 1, 10, 4, 9, 10, 11, 0, 11, 12, 13, 2, 12, 3, 13, 5, 6, 14, 14, 0, 3, 7, 15, 8, 15, 4, 16, 5, 17, 18, 16, 0, ...
[ "nice", "nonn" ]
A117073
[ 0, 1, 2, 3, 4, 5, 6, 9, 10, 11, 20, 21, 22, 40, 41, 42, 82, 83, 84, 166, 167, 168, 334, 335, 336, 670, 671, 672, 1340, 1341, 1342, 2682, 2683, 2684, 5366, 5367, 5368, 10734, 10735, 10736, 21470, 21471, 21472, 42942, 42943, 429...
[ "nonn" ]
A294415
[ 1, 3, 11, 24, 47, 85, 148, 251, 419, 693, 1138, 1859, 3027, 4918, 7979, 12933, 20950, 33923, 54915, 88882, 143843, 232774, 376669, 609497, 986222, 1595777, 2582059, 4177898, 6760021, 10937985, 17698074, 28636129, 46334275, 74970478, 121304829, 19...
[ "nonn", "easy" ]
A106700
[ 32, 72, 74, 90, 92, 96, 102, 104, 114, 116, 120, 144, 156, 200, 210, 216, 230, 236, 242, 260, 270, 272, 294, 296, 312, 314, 324, 326, 336, 344, 354, 386, 432, 450, 456, 464, 476, 494, 516, 522, 530, 546, 566, 600, 620, 630, ...
[ "nonn", "easy" ]
A255303
[ 1, 4, 16, 60, 216, 768, 2728, 9704, 34552, 123064, 438328, 1561176, 5560248, 19803096, 70529656, 251194904, 894643768, 3186321112, 11348251384, 40417397400, 143948695992, 512680882776, 1825940038264, 6503181876248, 23161425701176, 82490640856024, 293794773978616, ...
[ "nonn" ]
A005405
[ 1, 3, 6, 13, 24, 47, 86, 159, 285, 509, 895, 1565, 2708, 4660, 7964, 13543, 22912, 38604, 64785, 108356, 180661, 300384, 498183, 824365, 1361302, 2243799, 3692159, 6066161, 9952786, 16309055, 26694132, 43646685, 71297770, 116366274, 189774755, 30...
[ "nonn" ]
A072905
[ 4, 8, 12, 9, 20, 24, 28, 18, 16, 40, 44, 27, 52, 56, 60, 25, 68, 32, 76, 45, 84, 88, 92, 54, 36, 104, 48, 63, 116, 120, 124, 50, 132, 136, 140, 49, 148, 152, 156, 90, 164, 168, 172, 99, 80, 184, 188, 75, 64, 72, 204,...
[ "easy", "nonn" ]
A363923
[ 1, 1, 1, 8, 1, 6, 1, 256, 27, 10, 1, 288, 1, 14, 15, 32768, 1, 972, 1, 800, 21, 22, 1, 55296, 125, 26, 6561, 1568, 1, 900, 1, 16777216, 33, 34, 35, 279936, 1, 38, 39, 256000, 1, 1764, 1, 3872, 6075, 46, 1, 42467328, 343,...
[ "nonn" ]
A163122
[ 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 21, 22, 25, 27, 33, 35, 44, 49, 55, 66, 77, 88, 99, 121, 202, 242, 262, 302, 303, 362, 363, 382, 393, 403, 404, 453, 484, 505, 524, 543, 573, 605, 606, 626, 655, 689, 706, 707, 726, ...
[ "nonn", "base" ]
A060566
[ 1601, 1523, 1447, 1373, 1301, 1231, 1163, 1097, 1033, 971, 911, 853, 797, 743, 691, 641, 593, 547, 503, 461, 421, 383, 347, 313, 281, 251, 223, 197, 173, 151, 131, 113, 97, 83, 71, 61, 53, 47, 43, 41, 41, 43, 47, 53, 61, 71, ...
[ "easy", "nonn" ]
A259700
[ 1, 3, 8, 25, 72, 229, 689, 2224, 6875, 22457, 70767 ]
[ "nonn", "more" ]
A229411
[ 11772, 22684613, 46408035676, 95053083585891, 194334416016079650, 397464769862060700000, 8.127937295263571e+23, 1.6620778459865385e+27, 3.3989730837075745e+30 ]
[ "nonn" ]
A290147
[ 1, 3, 12, 66, 408, 2712, 18912, 136488, 1010784, 7637664, 58650240, 456377664, 3590674176, 28516332288, 228297907200, 1840515987072, 14929020470784, 121749590032896, 997676696045568, 8210704762960896, 67835018440593410, 562407734010335200, 4677727530446635000 ]
[ "nonn" ]
A013074
[ 1, 0, -4, 6, 5, -10, -220, 525, 8485, -46260, -197750, -1170125, 86033725, -778687650, 1197306500, -78964192125, 3166659679625, -40031792593000, 227546036519750, -8010745066189125, 311948554085325630 ]
[ "sign" ]
A203996
[ 2, 3, 3, 4, 6, 4, 5, 8, 8, 5, 6, 10, 12, 10, 6, 7, 12, 15, 15, 12, 7, 8, 14, 18, 20, 18, 14, 8, 9, 16, 21, 24, 24, 21, 16, 9, 10, 18, 24, 28, 30, 28, 24, 18, 10, 11, 20, 27, 32, 35, 35, 32, 27, 20, 11, 12, ...
[ "nonn", "tabl" ]
A031627
[ 9629, 31057, 31765, 32122, 66733, 86074, 110513, 111178, 112514, 114533, 138745, 140237, 168541, 170185, 173497, 203029, 205738, 209378, 238769, 239746, 241706, 242689, 243674, 244661, 246641, 248629, 249626, 323465, 325741, 328025 ]
[ "nonn" ]
A122839
[ 1, 2, 3, 6, 14, 15, 30, 35, 42, 60, 70, 78, 105, 190, 210, 312, 357, 418, 570, 714, 910, 1045, 1254, 1428, 2090, 2730, 3135, 3640, 4522, 4674, 5278, 6270, 10659, 10920, 12441, 13566, 14630, 15834, 16770, 18696, 20026, 21318, 23374, ...
[ "nonn" ]
A108559
[ 4, 30, 36, 41, 45, 56, 60, 73, 84, 89, 95, 127, 128, 134, 156, 183, 193, 194, 201, 239, 244, 251, 284, 302, 323, 331, 348, 360, 368, 372, 387, 391, 409, 413, 431, 432, 442, 454, 463, 496, 514, 516, 546, 565, 568, 620, 629, ...
[ "easy", "nonn" ]
A213329
[ 1, 2, 2, 3, 8, 5, 13, 9, 8, 25, 10, 15, 31, 19, 19, 15, 56, 0, 33, 79, 26, 33, 0, 21, 54, 110, 52, 126, 57, 16, 71, 42, 140, 29, 130, 0, 51, 76, 51, 53, 179, 0, 192, 93, 216, 34, 34, 107, 247, 120, 84, 278, 0, ...
[ "nonn" ]
A246540
[ 1, 5, 37, 325, 3125, 31925, 339077, 3700645, 41200981, 465736725, 5328229797, 61552244485, 716791570549, 8403794763125, 99096946864325, 1174370518273125, 13977636401394068, 167001257979441380, 2002052157653251600, 24073717683854557000, 290261630170911540000, 3.5083324843004...
[ "nonn" ]
A058460
[ 4, 7744, 7.744424444247727e+21, 2.2227474242447224e+33 ]
[ "nonn", "base", "hard", "more" ]
A352057
[ 0, 1, 3, 6, 10, 55, 66, 300, 666, 990, 3003, 5050, 10011, 66066, 500500, 600060, 50005000, 5000050000, 500000500000, 50000005000000, 5000000050000000, 500000000500000000, 50000000005000000000, 5.00000000005e+21, 5.000000000005e+23, 5.0000000000005e+25 ]
[ "nonn", "base" ]
A010192
[ 11, 1, 1, 7, 5, 1, 1, 1, 2, 1, 1, 1, 5, 7, 1, 1, 22, 1, 1, 7, 5, 1, 1, 1, 2, 1, 1, 1, 5, 7, 1, 1, 22, 1, 1, 7, 5, 1, 1, 1, 2, 1, 1, 1, 5, 7, 1, 1, 22, 1, 1, 7, 5, 1, 1, 1, 2, 1, 1, 1, 5, 7, 1,...
[ "nonn", "cofr" ]
A108049
[ 1, 5, 37, 253, 1129, 1441, 35393 ]
[ "nonn", "more", "hard" ]
A217003
[ 3512071871, 10470856319, 11956093919, 12283814015, 13150303199, 15128703359, 15966728855, 18063158399, 21887083295, 22572006479, 23388059519, 23836221695, 23940514367, 25231063319, 25638464159, 27742047839, 28160966735, 30070781279, 31251542399, 35160944399 ]
[ "nonn" ]
A351988
[ 0, 1, 2, 3, 4, 5, 6, 8, 8, 9, 14, 15, 12, 14, 14, 15, 16, 17, 18, 20, 20, 21, 22, 23, 24, 30, 30, 32, 54, 56, 30, 32, 32, 33, 56, 57, 54, 56, 56, 57, 62, 63, 78, 80, 80, 81, 86, 87, 48, 54, 54, 56, 60, 62, 54...
[ "nonn", "base" ]
A195788
[ 1, 1, 1, 3, 4, 1, 0, 1, 4, 3, 4, 0, 9, 6, 3, 8, 9, 2, 3, 2, 1, 7, 2, 8, 3, 7, 2, 0, 1, 3, 1, 1, 0, 0, 5, 1, 3, 0, 5, 5, 7, 2, 8, 7, 1, 5, 9, 2, 1, 2, 5, 5, 2, 9, 0, 6, 9, 5, 7, 3, 3, 1, 3, 2...
[ "nonn", "cons" ]
A075184
[ 3, 50, 675, 8820, 117600, 1632960, 23814000, 365904000, 5927644800, 101189088000, 1818030614400, 34326452160000, 679990671360000, 14108934647808000, 306113492805120000, 6933770723303424000 ]
[ "nonn", "easy" ]
A066144
[ 0, 2, 11, 19, 20, 74, 398, 779, 1062, 2329, 4189, 4280, 11278, 19962, 98318, 135137, 1051360, 1592930, 69226926, 4295054186, 4446008678, 17187271449, 18123849698 ]
[ "nonn", "base", "more" ]
A074155
[ 1, 36, 21, 40, 65, 96, 133, 176, 225, 280, 341, 408, 481, 560, 645, 736, 833, 936, 1045, 1160, 1281, 1408, 1541, 1680, 1825, 1976, 2133, 2296, 2465, 2640, 2821, 3008, 3201, 3400, 3605, 3816, 4033, 4256, 4485, 4720, 4961, 5208, 5461,...
[ "nonn" ]
A179764
[ 1, 0, 1, 0, 1, 0, 1, 2, 3, 4, 3, 2, 1, 0, 1, 2, 3, 2, 1, 2, 1, 2, 1, 0, 1, 2, 3, 2, 3, 2, 3, 2, 1, 2, 1, 0, 1, 2, 3, 2, 3, 2, 1, 2, 3, 4, 3, 2, 1, 0, 1, 2, 3, 4, 3, 2, 3, 2, 3, 2, 1, 2, 3, 2...
[ "nonn", "tabf" ]
A319834
[ 1, 2, 15, 184, 3325, 79056, 2345539, 83505920, 3472829721, 165321395200, 8868765212791, 529513463098368, 34831327847918484, 2503184803456354300, 195151614670701530000, 1.6405316791445974e+22, 1.4793333556848855e+24, 1.4244346621741491e+26, 1.4587416733382036e+28, 1.583199811285...
[ "nonn" ]
A044136
[ 34, 70, 106, 142, 178, 204, 214, 250, 286, 322, 358, 394, 420, 430, 466, 502, 538, 574, 610, 636, 646, 682, 718, 754, 790, 826, 852, 862, 898, 934, 970, 1006, 1042, 1068, 1078, 1114, 1150, 1186, 1222, 1224, 1284, 1294, 1330 ]
[ "nonn", "base" ]
A016673
[ 3, 9, 1, 2, 0, 2, 3, 0, 0, 5, 4, 2, 8, 1, 4, 6, 0, 5, 8, 6, 1, 8, 7, 5, 0, 7, 8, 7, 9, 1, 0, 5, 5, 1, 8, 4, 7, 1, 2, 6, 7, 0, 2, 8, 4, 2, 8, 9, 7, 2, 9, 0, 6, 9, 7, 9, 4, 5, 9, 7, 5, 7, 9, 2...
[ "nonn", "cons" ]
A341873
[ 1, 6, 7038, 2002644, 922569342, 380737463400, 175255606306116, 80315525064955440, 38028486993289855000, 1.8171889608389846e+22, 8.807723964899086e+24, 4.305311468773792e+27, 2.122088430918939e+30 ]
[ "nonn", "easy" ]
A340007
[ 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 3, 0, 1, 0, 1, 0, 1, 0, 1, 2, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 2, 0, 1, 2, 0, 2, 0, 1, 2, 2, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1...
[ "nonn" ]
A314953
[ 1, 5, 9, 14, 20, 25, 29, 33, 38, 44, 49, 53, 58, 63, 67, 72, 78, 83, 87, 91, 96, 102, 107, 111, 116, 121, 125, 130, 136, 141, 145, 149, 154, 160, 165, 169, 174, 179, 183, 188, 194, 199, 203, 207, 212, 218, 223, 227, 232,...
[ "nonn" ]
A303503
[ 1, 2, 36, 1860, 190120, 32232060, 8175770064, 2898980908824, 1369263687414480, 830988068906518400, 630109741730668300000, 5.8377336206793866e+23, 6.48851848280206e+26, 8.521461846280673e+29, 1.305460597778526e+33, 2.307324514460203e+36 ]
[ "nonn" ]
A089615
[ 0, 0, 0, 1, 0, 1, 0, 1, 1, 2, 0, 0, 1, 2, 2, 1, 1, 1, 1, 1, 2, 2, 0, 1, 1, 2, 2, 1, 0, 2, 2, 2, 3, 1, 3, 4, 2, 4, 2, 4, 2, 1, 1, 2, 3, 2, 2, 2, 2, 1, 3, 4, 1, 2, 2, 1, 5, 2, 2, 4, 3, 4, 1, 2...
[ "easy", "nonn" ]
A310545
[ 1, 4, 10, 18, 17, 26, 32, 40, 36, 48, 52, 64, 53, 70, 72, 86, 72, 92, 94, 106, 93, 112, 116, 126, 112, 134, 138, 148, 129, 158, 158, 170, 146, 180, 180, 192, 165, 200, 204, 212, 184, 220, 226, 234, 203, 242, 246, 258, 22...
[ "nonn" ]
A075501
[ 1, 6, 1, 36, 18, 1, 216, 252, 36, 1, 1296, 3240, 900, 60, 1, 7776, 40176, 19440, 2340, 90, 1, 46656, 489888, 390096, 75600, 5040, 126, 1, 279936, 5925312, 7511616, 2204496, 226800, 9576, 168, 1, 1679616, 71383680 ]
[ "nonn", "easy", "tabl" ]
A371077
[ 1, 0, 1, 0, 1, 1, 0, 4, 2, 1, 0, 28, 10, 3, 1, 0, 280, 80, 18, 4, 1, 0, 3640, 880, 162, 28, 5, 1, 0, 58240, 12320, 1944, 280, 40, 6, 1, 0, 1106560, 209440, 29160, 3640, 440, 54, 7, 1, 0, 24344320, 4188800, 524880, 5824...
[ "nonn", "tabl", "easy" ]
A250949
[ 40357, 428095, 4106983, 36809498, 300230097, 2251710502, 15686582837, 102608620935, 635877024847, 3761814167894, 21377061188188, 117290921530356, 624016885183519, 3230699482590753, 16325650347436124, 80728866160658830 ]
[ "nonn" ]
A121896
[ 1, 4, 8, 14, 20, 30, 37, 51, 61, 76, 89, 111, 120, 146, 165, 187, 205, 239, 255, 293, 312, 344, 375, 421, 434, 479, 516, 558, 587, 645, 664, 726, 760, 812, 861, 919, 937, 1011, 1066, 1128, 1159, 1241, 1272, 1358, 1407, 1465, ...
[ "easy", "nonn" ]
A111541
[ 0, 1, 0, 3, 2, 0, 14, 5, 3, 0, 84, 22, 8, 4, 0, 600, 128, 36, 12, 5, 0, 4908, 896, 212, 58, 17, 6, 0, 44952, 7220, 1496, 360, 90, 23, 7, 0, 454344, 65336, 12128, 2652, 602, 134, 30, 8, 0, 5016768, 653720, 110288, 22320, ...
[ "nonn", "tabl" ]
A071435
[ 1, 1, 2, 2, 3, 1, 1, 4, 4, 3, 2, 2, 1, 1, 4, 2, 2, 6, 4, 4, 1, 1, 2, 2, 7, 1, 1, 4, 4, 3, 2, 2, 1, 1, 4, 8, 2, 7, 4, 4, 1, 1, 2, 2, 7, 8, 1, 4, 4, 7, 2, 2, 1, 1, 4, 4, 2, 7, 7, 4, 1, 1, 2, 2...
[ "nonn" ]
A181189
[ 0, 0, 0, 3, 0, 0, 0, 5, 4, 0, 0, 7, 0, 0, 0, 13, 0, 7, 0, 11, 0, 0, 0, 13, 6, 0, 10, 15, 0, 0, 0, 29, 0, 0, 0, 19, 0, 0, 0, 21, 0, 0, 0, 23, 16, 0, 0, 37, 8, 11, 0, 27, 0, 19, 0, 29, 0, 0, 0, 31, ...
[ "nonn" ]
A085934
[ 1, 2, 3, 4, 10, 16, 20, 28, 30, 39, 40, 50, 60, 61, 70, 80, 82, 89, 90, 93, 98, 100, 101, 110, 127, 166, 172, 179, 188, 197, 200, 202, 217, 220, 236, 247, 263, 271, 274, 300, 303, 326, 330, 348, 359, 362, 366, 384, 395, ...
[ "base", "easy", "nonn" ]
A006005
[ 1, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 22...
[ "nonn", "easy" ]
A137608
[ 1, -1, 1, -1, 0, -1, 2, -1, 1, 0, 0, -1, 2, -2, 0, -1, 0, -1, 2, 0, 2, 0, 0, -1, 1, -2, 1, -2, 0, 0, 2, -1, 0, 0, 0, -1, 2, -2, 2, 0, 0, -2, 2, 0, 0, 0, 0, -1, 3, -1, 0, -2, 0, -1, 0, -2, 2, 0, 0, 0...
[ "sign", "mult" ]
A366008
[ 3, 36, 740, 17946, 475194, 13279034, 385185498 ]
[ "nonn", "hard", "more" ]
A380049
[ 0, 1, 3, 4, 6, 7, 9, 12, 14, 15, 17, 20, 24, 27, 29, 30, 32, 35, 39, 44, 48, 51, 55, 58, 60, 61, 63, 66, 70, 75, 81, 88, 94, 99, 103, 106, 110, 113, 115, 116, 118, 121, 125, 130, 136, 141, 147, 154, 160, 167, 173, ...
[ "nonn" ]
A084543
[ 3, -9, 69, -531, 6147, -73665, 1143045, -18456795, 359420355, -7279744185, 170639259525, -4151789871075, 113815089771075, -3231091019581425, 101428235414230720, -3289812808335929000, 116369085609950050000, -4.24424562189959e+21, 1.6703814438449254e+23 ]
[ "sign", "easy" ]
A280340
[ 1, 1, 101, 1101, 1011101, 111111101, 1011212111101, 1112122222111101, 101122323232322110000, 1.1122233444343334e+24, 1.0112243445465655e+30, 1.1122334566777788e+35, 1.0112244557699113e+42 ]
[ "nonn" ]
A198057
[ 1, 4, 15, 75, 879, 15766, 530019, 30323508, 2989066962, 507557052083 ]
[ "nonn" ]
A112001
[ 6, -231, 6608, -176330, 4714710, -130014885, 3745101360, -113311778580, 3608430175350, -120977128347075, 4267052705916000, -158151857368254750, 6150573832264612000, -250598489767931940000, 1.0680148143520635e+22, -4.753735439755967e+23 ]
[ "sign", "easy" ]
A107003
[ 5, 29, 53, 101, 149, 173, 197, 269, 293, 317, 389, 461, 509, 557, 653, 677, 701, 773, 797, 821, 941, 1013, 1061, 1109, 1181, 1229, 1277, 1301, 1373, 1493, 1613, 1637, 1709, 1733, 1877, 1901, 1949, 1973, 1997, 2069, 2141, 2213, 2237,...
[ "nonn", "easy" ]
A103851
[ 2, 119, 372, 814, 4350, 9797, 16625, 16729, 40224, 45191, 48121, 63137, 71520, 83264, 89744, 94166, 103551, 109538, 111283, 113690, 117620, 232363, 265101, 268661, 269466, 302024, 316847, 329793, 333947, 334725, 340910, 352997, 380914, 381169, 3844...
[ "nonn" ]
A232671
[ 212, 3138, 63632, 1323984, 26350948, 532378308, 10773984656, 217145249724, 4384228816944, 88517485617660, 1786475659945216, 36062434969543890, 727952626349243600, 14693874074841954000, 296605736453181900000 ]
[ "nonn" ]
A112217
[ 1, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 8, 8, 9, 10, 12, 12, 14, 15, 17, 18, 21, 22, 25, 27, 30, 32, 36, 38, 43, 46, 51, 54, 60, 64, 71, 76, 83, 89, 98, 104, 114, 122, 133, 142, 155, 165...
[ "nonn" ]
A131825
[ 0, 2, 3, 5, 6, 14, 18, 20, 22, 28, 38, 40, 42, 62, 66, 68, 74, 76, 78, 82, 98, 102, 104, 106, 114, 124, 126, 136, 148, 156, 178, 194, 196, 200, 204, 208, 226, 242, 246, 248, 254, 258, 262, 296, 302, 306, 308, 314, 330, ...
[ "nonn" ]
A058935
[ 0, 1, 110, 11011, 11011100, 11011100101, 11011100101110, 11011100101110112, 110111001011101100000, 1.1011100101110112e+24, 1.101110010111011e+28, 1.101110010111011e+32, 1.101110010111011e+36 ]
[ "base", "easy", "nonn" ]