n | a(n) |
---|---|
0 | 1 |
1 | 12 |
2 | 420 |
3 | 18480 |
4 | 900900 |
5 | 46558512 |
6 | 2498640144 |
7 | 137680171200 |
8 | 7735904619300 |
9 | 441233078286000 |
10 | 25467973278667920 |
11 | 1484298740174927040 |
12 | 87202550985276963600 |
13 | 5157850293780050462400 |
14 | 306839461354466267304000 |
15 | 18344908596179023234548480 |
[1,12,420,18480,900900,46558512,2498640144, 137680171200,7735904619300,441233078286000, 25467973278667920,1484298740174927040, 87202550985276963600,5157850293780050462400, 306839461354466267304000, 18344908596179023234548480] |