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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 120 |
| 3 | 10080 |
| 4 | 362880 |
| 5 | 79833600 |
| 6 | 6227020800 |
| 7 | 2615348736000 |
| 8 | 355687428096000 |
| 9 | 243290200817664000 |
| 10 | 51090942171709440000 |
| 11 | 51704033477769953280000 |
| 12 | 15511210043330985984000000 |
| 13 | 21777738900836704321536000000 |
| 14 | 8841761993739701954543616000000 |
| 15 | 16445677308355845635451125760000000 |
[12,120,10080,362880,79833600,6227020800, 2615348736000,355687428096000,243290200817664000, 51090942171709440000,51704033477769953280000, 15511210043330985984000000, 21777738900836704321536000000, 8841761993739701954543616000000, 16445677308355845635451125760000000] |