n | a(n) |
---|---|
1 | 0 |
2 | 2 |
3 | 5 |
4 | 12 |
5 | 38 |
6 | 166 |
7 | 899 |
8 | 4768 |
9 | 28388 |
10 | 180529 |
11 | 1209318 |
12 | 8398278 |
13 | 60070590 |
14 | 441296836 |
15 | 3314576487 |
16 | 25379433651 |
17 | 197622677481 |
[0,2,5,12,38,166,899,4768,28388,180529,1209318, 8398278,60070590,441296836,3314576487,25379433651, 197622677481] |