n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 6 |
4 | 23 |
5 | 107 |
6 | 583 |
7 | 3637 |
8 | 25548 |
9 | 199506 |
10 | 1714383 |
11 | 16075861 |
12 | 163346039 |
13 | 1787800653 |
14 | 20968763454 |
15 | 262377046698 |
[1,2,6,23,107,583,3637,25548,199506,1714383, 16075861,163346039,1787800653,20968763454, 262377046698] |