n | a(n) |
---|---|
6 | 1 |
7 | 42 |
8 | 1176 |
9 | 28224 |
10 | 635040 |
11 | 13970880 |
12 | 307359360 |
13 | 6849722880 |
14 | 155831195520 |
15 | 3636061228800 |
16 | 87265469491200 |
17 | 2157837063782400 |
18 | 55024845126451200 |
19 | 1447576694865100800 |
20 | 39291367432052736000 |
21 | 1100158288097476608000 |
22 | 31767070568814637056000 |
[1,42,1176,28224,635040,13970880,307359360, 6849722880,155831195520,3636061228800, 87265469491200,2157837063782400,55024845126451200, 1447576694865100800,39291367432052736000, 1100158288097476608000,31767070568814637056000] |