n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -2 |
3 | 20 |
4 | -504 |
5 | 25200 |
6 | -2189088 |
7 | 302702400 |
8 | -62564261760 |
9 | 18427508985600 |
10 | -7449695786856960 |
11 | 4010313259477324800 |
12 | -2803674333549374208000 |
13 | 2492728196309155284480000 |
14 | -2768630339381333070099456000 |
[1,1,-2,20,-504,25200,-2189088,302702400, -62564261760,18427508985600,-7449695786856960, 4010313259477324800,-2803674333549374208000, 2492728196309155284480000, -2768630339381333070099456000] |