The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 3 | 2 |
| 4 | 22 |
| 5 | 48 |
| 6 | 1568 |
| 7 | 9108 |
| 8 | 459944 |
| 9 | 3924896 |
| 10 | 332810880 |
| 11 | 3867308971 |
| 12 | 659368209568 |
| 13 | 11298978667872 |
| 14 | 4499416656998240 |
[2,22,48,1568,9108,459944,3924896,332810880, 3867308971,659368209568,11298978667872, 4499416656998240] |