n | a(n) |
---|---|
2 | 2 |
3 | 16 |
4 | 144 |
5 | 4608 |
6 | 115200 |
7 | 4147200 |
8 | 203212800 |
9 | 26011238400 |
10 | 2106910310400 |
11 | 210691031040000 |
12 | 25493614755840000 |
13 | 3671080524840960000 |
14 | 620412608698122240000 |
15 | 121600871304831959040000 |
[2,16,144,4608,115200,4147200,203212800, 26011238400,2106910310400,210691031040000, 25493614755840000,3671080524840960000, 620412608698122240000,121600871304831959040000] |