n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 15 |
5 | 18432 |
6 | 75600 |
7 | 276531978240000 |
8 | 4810168001497883738112000 |
9 | 215788176336727572480000000 |
10 | 2178419737991700039289327133392896000000000000 |
[1,2,3,15,18432,75600,276531978240000, 4810168001497883738112000, 215788176336727572480000000, 2178419737991700039289327133392896000000000000] |