n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 4 |
5 | 8 |
6 | 49 |
7 | 54 |
8 | 280 |
9 | 524 |
10 | 2362 |
11 | 2872 |
12 | 22694 |
13 | 21866 |
14 | 131696 |
15 | 298783 |
16 | 904634 |
17 | 1341518 |
18 | 10744516 |
19 | 10748218 |
20 | 72886710 |
21 | 145274501 |
22 | 522816718 |
23 | 713023210 |
24 | 5892611212 |
25 | 7059926597 |
26 | 35300963684 |
27 | 70604007679 |
[0,0,1,4,8,49,54,280,524,2362,2872,22694,21866, 131696,298783,904634,1341518,10744516,10748218, 72886710,145274501,522816718,713023210,5892611212, 7059926597,35300963684,70604007679] |