n | a(n) |
---|---|
3 | 12 |
4 | 4320 |
5 | 87091200 |
6 | 158018273280000 |
7 | 37845502865178624000000 |
8 | 1649653134695488211543654400000000 |
9 | 17257672962657131355854388575443353600000000000 |
[12,4320,87091200,158018273280000, 37845502865178624000000, 1649653134695488211543654400000000, 17257672962657131355854388575443353600000000000] |