n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 4 |
6 | 140 |
7 | 2403 |
8 | 33593 |
9 | 410754 |
10 | 4627165 |
11 | 49484726 |
12 | 511589763 |
13 | 5167085638 |
14 | 51359117940 |
15 | 504751212449 |
16 | 4920758221226 |
17 | 47694473239363 |
18 | 460356869024451 |
[0,0,0,0,4,140,2403,33593,410754,4627165,49484726, 511589763,5167085638,51359117940,504751212449, 4920758221226,47694473239363,460356869024451] |