n | a(n) |
---|---|
1 | 1 |
2 | 12 |
3 | 4284 |
4 | 84720384 |
5 | 148993369113600 |
6 | 34155172566092379340800 |
7 | 1406681240638328150516203644518400 |
8 | 13722109275339434419337247034130459935742361600 |
[1,12,4284,84720384,148993369113600, 34155172566092379340800, 1406681240638328150516203644518400, 13722109275339434419337247034130459935742361600] |