The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 4656 |
| 16 | 23862 |
| 17 | 14841 |
| 18 | 65960 |
| 19 | 190120 |
| 20 | 741468 |
| 21 | 3375988 |
| 22 | 11662504 |
| 23 | 40893648 |
| 24 | 126088748 |
| 25 | 360406410 |
| 26 | 998048520 |
| 27 | 2614461952 |
| 28 | 6536154880 |
| 29 | 15589859400 |
| 30 | 35337014640 |
| 31 | 76345991760 |
| 32 | 157463608005 |
[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4656,23862,14841, 65960,190120,741468,3375988,11662504,40893648, 126088748,360406410,998048520,2614461952, 6536154880,15589859400,35337014640,76345991760, 157463608005] |