n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 0 |
3 | 8 |
4 | 33 |
5 | 168 |
6 | 962 |
7 | 5928 |
8 | 38907 |
9 | 268056 |
10 | 1918938 |
11 | 14169360 |
12 | 107333498 |
13 | 830660688 |
14 | 6546655404 |
15 | 52410001448 |
[1,0,0,8,33,168,962,5928,38907,268056,1918938, 14169360,107333498,830660688,6546655404, 52410001448] |