n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 27 |
5 | 4860 |
6 | 164423 |
7 | 2651890 |
8 | 25981150 |
9 | 180378380 |
10 | 971905679 |
11 | 4316504623 |
12 | 16457726539 |
13 | 55463445891 |
14 | 168782705327 |
15 | 471407278652 |
16 | 1223710587908 |
17 | 2982045310010 |
[0,0,0,27,4860,164423,2651890,25981150,180378380, 971905679,4316504623,16457726539,55463445891, 168782705327,471407278652,1223710587908, 2982045310010] |