n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 9 |
6 | 1875 |
7 | 52323 |
8 | 695616 |
9 | 5840088 |
10 | 35715529 |
11 | 172520643 |
12 | 708871152 |
13 | 2517687856 |
14 | 8023634766 |
15 | 23292994812 |
16 | 62357664744 |
17 | 155765126265 |
18 | 367482996726 |
19 | 822866800569 |
20 | 1762214894004 |
21 | 3621792301059 |
[0,0,0,0,9,1875,52323,695616,5840088,35715529, 172520643,708871152,2517687856,8023634766, 23292994812,62357664744,155765126265,367482996726, 822866800569,1762214894004,3621792301059] |