n | a(n) |
---|---|
2 | 1 |
3 | 28 |
4 | 960 |
5 | 43200 |
6 | 2520000 |
7 | 186278400 |
8 | 17069875200 |
9 | 1902071808000 |
10 | 253487646720000 |
11 | 39833773056000000 |
12 | 7291173820170240000 |
13 | 1538106259064094720000 |
14 | 370502654756909875200000 |
[1,28,960,43200,2520000,186278400,17069875200, 1902071808000,253487646720000,39833773056000000, 7291173820170240000,1538106259064094720000, 370502654756909875200000] |