n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 20 |
4 | 182160 |
5 | 27993556039680 |
6 | 4308936629569882673577984000 |
7 | 58707314863972899718827044647532534690532556800000 |
8 | 8707001005945253804913483804375384209011420702238388319242163029949808640000000000 |
[1,1,1,20,182160,27993556039680, 4308936629569882673577984000, 58707314863972899718827044647532534690532556800000\ , 87070010059452538049134838043753842090114207022383\ 88319242163029949808640000000000] |