The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 5 |
| 6 | 6 |
| 7 | 1 |
| 8 | 24 |
| 9 | 28 |
| 10 | 8 |
| 11 | 119 |
| 12 | 183 |
| 13 | 57 |
| 14 | 1 |
| 15 | 832 |
| 16 | 1209 |
| 17 | 432 |
| 18 | 47 |
| 19 | 6255 |
| 20 | 9514 |
| 21 | 3760 |
| 22 | 630 |
| 23 | 1 |
| 24 | 54380 |
| 25 | 82636 |
| 26 | 36352 |
| 27 | 7828 |
| 28 | 244 |
| 29 | 515284 |
| 30 | 812714 |
| 31 | 383648 |
| 32 | 94997 |
| 33 | 7756 |
| 34 | 1 |
| 35 | 5454624 |
| 36 | 8727684 |
| 37 | 4377888 |
| 38 | 1243482 |
| 39 | 153536 |
| 40 | 1186 |
[1,0,1,2,1,5,6,1,24,28,8,119,183,57,1,832,1209, 432,47,6255,9514,3760,630,1,54380,82636,36352, 7828,244,515284,812714,383648,94997,7756,1, 5454624,8727684,4377888,1243482,153536,1186] |