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| n | a(n) |
|---|---|
| 2 | 12 |
| 3 | 1440 |
| 4 | 907200 |
| 5 | 101606400 |
| 6 | 100590336000 |
| 7 | 172613016576000 |
| 8 | 31415569016832000 |
| 9 | 256351043177349120000 |
| 10 | 4471274895099323351040000 |
| 11 | 8495422300688714366976000000 |
| 12 | 90272357367118278863486976000000 |
[12,1440,907200,101606400,100590336000, 172613016576000,31415569016832000, 256351043177349120000,4471274895099323351040000, 8495422300688714366976000000, 90272357367118278863486976000000] |