n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 8 |
4 | 22 |
5 | 256 |
6 | 2247 |
7 | 21576 |
8 | 225102 |
9 | 2303014 |
10 | 24563283 |
11 | 267169300 |
12 | 2937239494 |
13 | 32814269626 |
14 | 370231763542 |
15 | 4215902111928 |
[0,0,1,8,22,256,2247,21576,225102,2303014, 24563283,267169300,2937239494,32814269626, 370231763542,4215902111928] |