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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 1344 |
| 3 | 100800 |
| 4 | 6183744 |
| 5 | 345422784 |
| 6 | 18272616768 |
| 7 | 932758314432 |
| 8 | 46431146637120 |
| 9 | 2268408487407552 |
| 10 | 109231939785014592 |
| 11 | 5199659528294691264 |
| 12 | 245200862770851468096 |
| 13 | 11473103730476342109120 |
| 14 | 533310525557661056874816 |
[8,1344,100800,6183744,345422784,18272616768, 932758314432,46431146637120,2268408487407552, 109231939785014592,5199659528294691264, 245200862770851468096,11473103730476342109120, 533310525557661056874816] |