n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 1 |
5 | 30 |
6 | 705 |
7 | 15960 |
8 | 370125 |
9 | 8998290 |
10 | 231416325 |
11 | 6314962500 |
12 | 182894567625 |
13 | 5615811951750 |
14 | 182497749258825 |
15 | 6264206330382000 |
16 | 226636350724909125 |
17 | 8624703350821808250 |
18 | 344535241891693978125 |
19 | 14419858385821910521500 |
[0,0,0,1,30,705,15960,370125,8998290,231416325, 6314962500,182894567625,5615811951750, 182497749258825,6264206330382000, 226636350724909125,8624703350821808250, 344535241891693978125,14419858385821910521500] |