The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 1 |
| 4 | 3 |
| 5 | 6 |
| 6 | 1 |
| 7 | 4 |
| 8 | 3 |
| 9 | 26 |
| 10 | 1 |
| 11 | 5 |
| 12 | 20 |
| 13 | 33 |
| 14 | 150 |
| 15 | 1 |
| 16 | 6 |
| 17 | 15 |
| 18 | 44 |
| 19 | 15 |
| 20 | 1082 |
| 21 | 1 |
| 22 | 7 |
| 23 | 42 |
| 24 | 115 |
| 25 | 380 |
| 26 | 273 |
| 27 | 9366 |
| 28 | 1 |
| 29 | 8 |
| 30 | 7 |
| 31 | 366 |
| 32 | 285 |
| 33 | 4108 |
| 34 | 1491 |
| 35 | 94586 |
| 36 | 1 |
| 37 | 9 |
| 38 | 72 |
| 39 | 91 |
| 40 | 4074 |
| 41 | 3535 |
| 42 | 17780 |
| 43 | 38001 |
| 44 | 1091670 |
| 45 | 1 |
| 46 | 10 |
| 47 | 45 |
| 48 | 776 |
| 49 | 70 |
| 50 | 11334 |
| 51 | 26355 |
| 52 | 269348 |
| 53 | 17295 |
| 54 | 14174522 |
| 55 | 1 |
| 56 | 11 |
| 57 | 110 |
| 58 | 531 |
| 59 | 10440 |
| 60 | 2149 |
| 61 | 189714 |
| 62 | 458555 |
| 63 | 4663060 |
| 64 | 566733 |
| 65 | 204495126 |
[1,1,2,1,3,6,1,4,3,26,1,5,20,33,150,1,6,15,44,15, 1082,1,7,42,115,380,273,9366,1,8,7,366,285,4108, 1491,94586,1,9,72,91,4074,3535,17780,38001, 1091670,1,10,45,776,70,11334,26355,269348,17295, 14174522,1,11,110,531,10440,2149,189714,458555, 4663060,566733,204495126] |