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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 12 |
| 3 | 1080 |
| 4 | 224000 |
| 5 | 14817600000 |
| 6 | 186313420339200000 |
| 7 | 1033954523962885324800000 |
| 8 | 365356847125734485878112256000000 |
| 9 | 514390892189284848943526481454694400000000 |
| 10 | 15402297982638230438765209613012092908994560000000000 |
| 11 | 5520417482843902292560357271173454517680021278744903680000000000 |
[1,12,1080,224000,14817600000,186313420339200000, 1033954523962885324800000, 365356847125734485878112256000000, 514390892189284848943526481454694400000000, 15402297982638230438765209613012092908994560000000\ 000, 55204174828439022925603572711734545176800212787449\ 03680000000000] |