n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 8 |
3 | 248 |
4 | 11328 |
5 | 1091232 |
6 | 148080000 |
7 | 30317577600 |
8 | 8228536780800 |
9 | 2957031184028160 |
10 | 1336782441018009600 |
11 | 749500660718368634880 |
12 | 508063303148296391147520 |
13 | 410659058984740631962951680 |
[0,2,8,248,11328,1091232,148080000,30317577600, 8228536780800,2957031184028160, 1336782441018009600,749500660718368634880, 508063303148296391147520, 410659058984740631962951680] |