n | a(n) |
---|---|
1 | 1 |
2 | 720 |
3 | 1814400 |
4 | 12192768000 |
5 | 184354652160000 |
6 | 5574884681318400000 |
7 | 309071606732292096000000 |
8 | 29374165503837040803840000000 |
9 | 4536546120412592581745049600000000 |
[1,720,1814400,12192768000,184354652160000, 5574884681318400000,309071606732292096000000, 29374165503837040803840000000, 4536546120412592581745049600000000] |