n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 29 |
3 | 168 |
4 | 629 |
5 | 2641 |
6 | 10800 |
7 | 43692 |
8 | 175608 |
9 | 699725 |
10 | 2807540 |
11 | 11255093 |
12 | 45020433 |
13 | 180044388 |
14 | 720221592 |
15 | 2880750425 |
[1,4,29,168,629,2641,10800,43692,175608,699725, 2807540,11255093,45020433,180044388,720221592, 2880750425] |