n | a(n) |
---|---|
3 | 1 |
4 | 1 |
5 | 6 |
6 | 18 |
7 | 120 |
8 | 1260 |
9 | 1485540 |
10 | 28667100 |
11 | 28667100 |
12 | 842889105240 |
13 | 2281585556250 |
14 | 163881570370980 |
15 | 45187548280664790 |
[1,1,6,18,120,1260,1485540,28667100,28667100, 842889105240,2281585556250,163881570370980, 45187548280664790] |