n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 3 |
7 | 9 |
8 | 23 |
9 | 45 |
10 | 169 |
11 | 1061 |
12 | 6743 |
13 | 40273 |
14 | 284761 |
15 | 2852385 |
16 | 36414365 |
17 | 522818739 |
18 | 8493813357 |
19 | 169218922641 |
[1,1,1,1,1,3,9,23,45,169,1061,6743,40273,284761, 2852385,36414365,522818739,8493813357, 169218922641] |