n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 8 |
4 | 42 |
5 | 144 |
6 | 1440 |
7 | 5760 |
8 | 75600 |
9 | 524160 |
10 | 6531840 |
11 | 43545600 |
12 | 1117670400 |
13 | 6706022400 |
14 | 149448499200 |
15 | 2092278988800 |
16 | 40537905408000 |
17 | 376610217984000 |
18 | 13871809695744000 |
19 | 128047474114560000 |
20 | 5109094217170944000 |
[1,3,8,42,144,1440,5760,75600,524160,6531840, 43545600,1117670400,6706022400,149448499200, 2092278988800,40537905408000,376610217984000, 13871809695744000,128047474114560000, 5109094217170944000] |