The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 64 |
| 3 | 320 |
| 4 | 5000 |
| 5 | 191008 |
| 6 | 14760960 |
| 7 | 2327810048 |
| 8 | 744138184192 |
| 9 | 482125942079488 |
| 10 | 633412084252934144 |
| 11 | 1687400357268217397248 |
| 12 | 9114708361014996399816704 |
| 13 | 99830224938625064018120802304 |
[5,64,320,5000,191008,14760960,2327810048, 744138184192,482125942079488,633412084252934144, 1687400357268217397248,9114708361014996399816704, 99830224938625064018120802304] |