n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 29 |
4 | 303 |
5 | 4108 |
6 | 68165 |
7 | 1334403 |
8 | 30056112 |
9 | 764920823 |
10 | 21694511367 |
11 | 678288426792 |
12 | 23173084581845 |
13 | 858785085529061 |
14 | 34311202499100416 |
15 | 1470080434980994825 |
16 | 67236889676684657943 |
17 | 3269565144147886318168 |
[1,1,4,29,303,4108,68165,1334403,30056112, 764920823,21694511367,678288426792,23173084581845, 858785085529061,34311202499100416, 1470080434980994825,67236889676684657943, 3269565144147886318168] |