n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 40 |
3 | 480 |
4 | 6240 |
5 | 84864 |
6 | 1188096 |
7 | 16972800 |
8 | 246105600 |
9 | 3609548800 |
10 | 53421322240 |
11 | 796463349760 |
12 | 11946950246400 |
13 | 180123249868800 |
14 | 2727580640870400 |
15 | 41459225741230080 |
16 | 632253192553758720 |
[1,4,40,480,6240,84864,1188096,16972800,246105600, 3609548800,53421322240,796463349760, 11946950246400,180123249868800,2727580640870400, 41459225741230080,632253192553758720] |