n | a(n) |
---|---|
1 | 2 |
2 | 2 |
3 | 12 |
4 | 240 |
5 | 725760 |
6 | 79833600 |
7 | 2615348736000 |
8 | 711374856192000 |
9 | 102181884343418880000 |
10 | 21777738900836704321536000000 |
11 | 17683523987479403909087232000000 |
[2,2,12,240,725760,79833600,2615348736000, 711374856192000,102181884343418880000, 21777738900836704321536000000, 17683523987479403909087232000000] |