n | a(n) |
---|---|
-1 | 1 |
0 | 2 |
1 | 12 |
2 | 24 |
3 | 720 |
4 | 160 |
5 | 60480 |
6 | 24192 |
7 | 3628800 |
8 | 1036800 |
9 | 479001600 |
10 | 788480 |
11 | 2615348736000 |
12 | 475517952000 |
13 | 31384184832000 |
14 | 689762304000 |
15 | 32011868528640000 |
16 | 15613165568 |
17 | 786014494949376000 |
18 | 109285437800448000 |
[1,2,12,24,720,160,60480,24192,3628800,1036800, 479001600,788480,2615348736000,475517952000, 31384184832000,689762304000,32011868528640000, 15613165568,786014494949376000,109285437800448000] |