n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 840 |
4 | 54486432000 |
5 | 68523655451482690147713024000000 |
6 | 2753622660283944533494648206058191857701074569760095316814277221684346880000000000000 |
[1,3,840,54486432000, 68523655451482690147713024000000, 27536226602839445334946482060581918577010745697600\ 95316814277221684346880000000000000] |