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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 8 |
| 2 | 96 |
| 3 | 1664 |
| 4 | 36800 |
| 5 | 1008768 |
| 6 | 32626560 |
| 7 | 1221399040 |
| 8 | 51734584320 |
| 9 | 2459086364672 |
| 10 | 129082499311616 |
| 11 | 7432690738003968 |
| 12 | 464885622793134080 |
| 13 | 31456185663820136448 |
| 14 | 2284815238218471260160 |
| 15 | 177611252880786297913344 |
[1,8,96,1664,36800,1008768,32626560,1221399040, 51734584320,2459086364672,129082499311616, 7432690738003968,464885622793134080, 31456185663820136448,2284815238218471260160, 177611252880786297913344] |