n | a(n) |
---|---|
1 | 1 |
2 | 12 |
3 | 68 |
4 | 504 |
5 | 3355 |
6 | 23256 |
7 | 158717 |
8 | 1089648 |
9 | 7463884 |
10 | 51170460 |
11 | 350695511 |
12 | 2403786672 |
13 | 16475579353 |
14 | 112925875764 |
15 | 774003961940 |
16 | 5305106018016 |
17 | 36361727272627 |
18 | 249227013404808 |
19 | 1708227291909269 |
20 | 11708364225400920 |
21 | 80250321774226396 |
22 | 550043889533755332 |
23 | 3770056901455017263 |
[1,12,68,504,3355,23256,158717,1089648,7463884, 51170460,350695511,2403786672,16475579353, 112925875764,774003961940,5305106018016, 36361727272627,249227013404808,1708227291909269, 11708364225400920,80250321774226396, 550043889533755332,3770056901455017263] |