n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 3 |
5 | 15 |
6 | 33 |
7 | 9061920 |
8 | 1252445414220 |
9 | 126032376305404800 |
10 | 50110448042127911907268800 |
11 | 13399946812028296616282674883512406948355335893125182077721607466200299913000 |
[1,1,1,3,3,15,33,9061920,1252445414220, 126032376305404800,50110448042127911907268800, 13399946812028296616282674883512406948355335893125\ 182077721607466200299913000] |