n | a(n) |
---|---|
3 | 1 |
4 | 1 |
5 | 1 |
6 | 1 |
7 | 1 |
8 | 2 |
9 | 4 |
10 | 10 |
11 | 25 |
12 | 87 |
13 | 313 |
14 | 1357 |
15 | 6244 |
16 | 30926 |
17 | 158428 |
18 | 836749 |
19 | 4504607 |
20 | 24649284 |
21 | 136610879 |
22 | 765598927 |
23 | 4332047595 |
24 | 24724362117 |
25 | 142205424580 |
26 | 823687567019 |
27 | 4801749063379 |
[1,1,1,1,1,2,4,10,25,87,313,1357,6244,30926, 158428,836749,4504607,24649284,136610879, 765598927,4332047595,24724362117,142205424580, 823687567019,4801749063379] |