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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 24 |
| 5 | 120 |
| 6 | 720 |
| 7 | 5040 |
| 8 | 40320 |
| 9 | 336000 |
| 10 | 3023712 |
| 11 | 29759040 |
| 12 | 314642496 |
| 13 | 3608470880 |
| 14 | 43346020032 |
| 15 | 570442056608 |
| 16 | 8160756625776 |
[1,2,6,24,120,720,5040,40320,336000,3023712, 29759040,314642496,3608470880,43346020032, 570442056608,8160756625776] |