n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 120 |
4 | 2400 |
5 | 33960 |
6 | 441600 |
7 | 5436960 |
8 | 64509840 |
9 | 745845120 |
10 | 8461348080 |
11 | 94558053840 |
12 | 1044594244080 |
13 | 11426874632880 |
[0,0,120,2400,33960,441600,5436960,64509840, 745845120,8461348080,94558053840,1044594244080, 11426874632880] |