n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 24 |
4 | 240 |
5 | 3360 |
6 | 60480 |
7 | 1330560 |
8 | 34594560 |
9 | 1037836800 |
10 | 35286451200 |
11 | 1340885145600 |
12 | 56317176115200 |
13 | 2590590101299200 |
14 | 129529505064960000 |
15 | 6994593273507840000 |
16 | 405686409863454720000 |
17 | 25152557411534192640000 |
[0,1,4,24,240,3360,60480,1330560,34594560, 1037836800,35286451200,1340885145600, 56317176115200,2590590101299200, 129529505064960000,6994593273507840000, 405686409863454720000,25152557411534192640000] |