n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 6 |
4 | 33 |
5 | 4200 |
6 | 4192200 |
7 | 1705200 |
8 | 77892963984 |
9 | 10086416728304192640 |
10 | 126556188275836361347200 |
11 | 451535899566923284351392000 |
12 | 1253032399528279799996000622278320876800 |
[1,1,6,33,4200,4192200,1705200,77892963984, 10086416728304192640,126556188275836361347200, 451535899566923284351392000, 1253032399528279799996000622278320876800] |