n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 70 |
4 | 1960 |
5 | 88200 |
6 | 5821200 |
7 | 529729200 |
8 | 63567504000 |
9 | 9725828112000 |
10 | 1847907341280000 |
11 | 426866595835680000 |
12 | 117815180450647680000 |
13 | 38289933646460496000000 |
14 | 14473594918362067488000000 |
15 | 6296013789487499357280000000 |
16 | 3122822839585799681210880000000 |
[1,1,5,70,1960,88200,5821200,529729200, 63567504000,9725828112000,1847907341280000, 426866595835680000,117815180450647680000, 38289933646460496000000, 14473594918362067488000000, 6296013789487499357280000000, 3122822839585799681210880000000] |