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| n | a(n) |
|---|---|
| 10 | 1 |
| 11 | 77 |
| 12 | 3486 |
| 13 | 121485 |
| 14 | 3612280 |
| 15 | 96560646 |
| 16 | 2392407864 |
| 17 | 56017460733 |
| 18 | 1255914977625 |
| 19 | 27212042858000 |
| 20 | 573658984353378 |
| 21 | 11825811462719982 |
| 22 | 239315973934897860 |
| 23 | 4768545345973022600 |
| 24 | 93780365051563029360 |
[1,77,3486,121485,3612280,96560646,2392407864, 56017460733,1255914977625,27212042858000, 573658984353378,11825811462719982, 239315973934897860,4768545345973022600, 93780365051563029360] |