n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 9 |
3 | 151 |
4 | 3900 |
5 | 143956 |
6 | 7188048 |
7 | 466900848 |
8 | 38269041408 |
9 | 3864146985216 |
10 | 471339558835200 |
11 | 68335862058777600 |
12 | 11616056962961817600 |
13 | 2288216707872948633600 |
14 | 517111756256861311795200 |
[0,1,9,151,3900,143956,7188048,466900848, 38269041408,3864146985216,471339558835200, 68335862058777600,11616056962961817600, 2288216707872948633600,517111756256861311795200] |