n | a(n) |
---|---|
1 | 0 |
2 | 4 |
3 | 0 |
4 | 43 |
5 | 44 |
6 | 736 |
7 | 1680 |
8 | 14548 |
9 | 47314 |
10 | 307629 |
11 | 1201506 |
12 | 6768794 |
13 | 29159864 |
14 | 152481584 |
15 | 692301668 |
16 | 3481342319 |
17 | 16253985408 |
18 | 80073291120 |
19 | 379418253880 |
20 | 1849109113064 |
21 | 8830193356854 |
22 | 42791854403241 |
23 | 205182113819686 |
[0,4,0,43,44,736,1680,14548,47314,307629,1201506, 6768794,29159864,152481584,692301668,3481342319, 16253985408,80073291120,379418253880, 1849109113064,8830193356854,42791854403241, 205182113819686] |