n | a(n) |
---|---|
2 | 1 |
3 | 4 |
4 | 31 |
5 | 360 |
6 | 5625 |
7 | 110880 |
8 | 2643795 |
9 | 74035080 |
10 | 2382538725 |
11 | 86656878000 |
12 | 3515761193175 |
13 | 157425426358200 |
14 | 7711961781949425 |
15 | 410298436511964000 |
16 | 23559634669682986875 |
17 | 1452240056377167057000 |
18 | 95649328231839993736125 |
[1,4,31,360,5625,110880,2643795,74035080, 2382538725,86656878000,3515761193175, 157425426358200,7711961781949425, 410298436511964000,23559634669682986875, 1452240056377167057000,95649328231839993736125] |