n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 64 |
5 | 339 |
6 | 1885 |
7 | 10851 |
8 | 64109 |
9 | 386510 |
10 | 2368354 |
11 | 14706331 |
12 | 92337618 |
13 | 585239903 |
14 | 3739309053 |
15 | 24059542845 |
16 | 155756019048 |
17 | 1013801283133 |
18 | 6630587014935 |
19 | 43553555324502 |
[0,1,3,13,64,339,1885,10851,64109,386510,2368354, 14706331,92337618,585239903,3739309053, 24059542845,155756019048,1013801283133, 6630587014935,43553555324502] |