n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 28 |
5 | 192 |
6 | 1952 |
7 | 28800 |
8 | 618496 |
9 | 19132416 |
10 | 853508096 |
11 | 54584672256 |
12 | 5007197863936 |
13 | 656391329021952 |
14 | 122997864673574912 |
15 | 32863344789678981120 |
16 | 12522141669213840867328 |
17 | 6792468641646224590503936 |
18 | 5245768641385222636392415232 |
[1,2,6,28,192,1952,28800,618496,19132416, 853508096,54584672256,5007197863936, 656391329021952,122997864673574912, 32863344789678981120,12522141669213840867328, 6792468641646224590503936, 5245768641385222636392415232] |