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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 384 |
| 3 | 9216 |
| 4 | 2949120 |
| 5 | 58982400 |
| 6 | 25480396800 |
| 7 | 1664719257600 |
| 8 | 7457942274048000 |
| 9 | 414235422307123200 |
| 10 | 165694168922849280000 |
| 11 | 26731992586219683840000 |
| 12 | 153976277296625378918400000 |
| 13 | 10408796345251875614883840000 |
| 14 | 24481489004032411446206791680000 |
| 15 | 14688893402419446867724075008000000 |
[8,384,9216,2949120,58982400,25480396800, 1664719257600,7457942274048000,414235422307123200, 165694168922849280000,26731992586219683840000, 153976277296625378918400000, 10408796345251875614883840000, 24481489004032411446206791680000, 14688893402419446867724075008000000] |