n | a(n) |
---|---|
0 | 1 |
1 | 40320 |
2 | 81729648000 |
3 | 369398958888960000 |
4 | 2390461829733887910000000 |
5 | 18975581770994682860770223800320 |
6 | 171889289584866507880743491472699801600 |
[1,40320,81729648000,369398958888960000, 2390461829733887910000000, 18975581770994682860770223800320, 171889289584866507880743491472699801600] |