The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 288 |
| 3 | 366080 |
| 4 | 1468180471808 |
| 5 | 82529385161696481036468224 |
| 6 | 1089774606838023485255831165505649866382132184512200704 |
[8,288,366080,1468180471808, 82529385161696481036468224, 10897746068380234852558311655056498663821321845122\ 00704] |