n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 1 |
4 | 3 |
5 | 2 |
6 | 10 |
7 | 36 |
8 | 77 |
9 | 170 |
10 | 1539 |
11 | 2778 |
12 | 26239 |
13 | 152082 |
14 | 1317122 |
15 | 7797811 |
16 | 129473317 |
17 | 857792500 |
18 | 17986500145 |
19 | 205469564882 |
[1,2,1,3,2,10,36,77,170,1539,2778,26239,152082, 1317122,7797811,129473317,857792500,17986500145, 205469564882] |