n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 5 |
4 | 18 |
5 | 71 |
6 | 356 |
7 | 2097 |
8 | 14212 |
9 | 105821 |
10 | 887576 |
11 | 8093601 |
12 | 81310936 |
13 | 876456695 |
14 | 10257217440 |
15 | 127631146697 |
16 | 1705775408656 |
[1,2,5,18,71,356,2097,14212,105821,887576,8093601, 81310936,876456695,10257217440,127631146697, 1705775408656] |