n | a(n) |
---|---|
0 | 1 |
1 | 8 |
2 | 40 |
3 | 204 |
4 | 888 |
5 | 3580 |
6 | 14648 |
7 | 59792 |
8 | 239668 |
9 | 960664 |
10 | 3844852 |
11 | 15388808 |
12 | 61571632 |
13 | 246305788 |
14 | 985328220 |
15 | 3941279788 |
[1,8,40,204,888,3580,14648,59792,239668,960664, 3844852,15388808,61571632,246305788,985328220, 3941279788] |