The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 8 |
| 5 | 1 |
| 6 | 1 |
| 7 | 31 |
| 8 | 31 |
| 9 | 1 |
| 10 | 1 |
| 11 | 98 |
| 12 | 290 |
| 13 | 98 |
| 14 | 1 |
| 15 | 1 |
| 16 | 289 |
| 17 | 1974 |
| 18 | 1974 |
| 19 | 289 |
| 20 | 1 |
| 21 | 1 |
| 22 | 836 |
| 23 | 11719 |
| 24 | 25944 |
| 25 | 11719 |
| 26 | 836 |
| 27 | 1 |
| 28 | 1 |
| 29 | 2419 |
| 30 | 64929 |
| 31 | 275307 |
| 32 | 275307 |
| 33 | 64929 |
| 34 | 2419 |
| 35 | 1 |
| 36 | 1 |
| 37 | 7046 |
| 38 | 346192 |
| 39 | 2573466 |
| 40 | 4831134 |
| 41 | 2573466 |
| 42 | 346192 |
| 43 | 7046 |
| 44 | 1 |
| 45 | 1 |
| 46 | 20677 |
| 47 | 1804144 |
| 48 | 22163080 |
| 49 | 70723522 |
| 50 | 70723522 |
| 51 | 22163080 |
| 52 | 1804144 |
| 53 | 20677 |
| 54 | 1 |
[1,1,1,1,8,1,1,31,31,1,1,98,290,98,1,1,289,1974, 1974,289,1,1,836,11719,25944,11719,836,1,1,2419, 64929,275307,275307,64929,2419,1,1,7046,346192, 2573466,4831134,2573466,346192,7046,1,1,20677, 1804144,22163080,70723522,70723522,22163080, 1804144,20677,1] |