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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 8 |
| 3 | 108 |
| 4 | 1888 |
| 5 | 38798 |
| 6 | 894308 |
| 7 | 22517256 |
| 8 | 609112756 |
| 9 | 17507219813 |
| 10 | 530495478900 |
| 11 | 16850219461706 |
| 12 | 558608940038072 |
| 13 | 19263089278722726 |
| 14 | 689119527976265884 |
| 15 | 25519081467271687938 |
| 16 | 976447764170903902364 |
[1,1,8,108,1888,38798,894308,22517256,609112756, 17507219813,530495478900,16850219461706, 558608940038072,19263089278722726, 689119527976265884,25519081467271687938, 976447764170903902364] |