n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 6 |
3 | 90 |
4 | 2520 |
5 | 120960 |
6 | 9979200 |
7 | 1377295920 |
8 | 285145660800 |
9 | 78922558915200 |
10 | 27250976424672000 |
11 | 11359413770434329600 |
12 | 5628391828843104921600 |
13 | 3284252230408078849920000 |
14 | 2238997166752030045320960000 |
[0,1,6,90,2520,120960,9979200,1377295920, 285145660800,78922558915200,27250976424672000, 11359413770434329600,5628391828843104921600, 3284252230408078849920000, 2238997166752030045320960000] |