n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 1 |
7 | 5 |
8 | 19 |
9 | 43 |
10 | 103 |
11 | 349 |
12 | 1189 |
13 | 4335 |
14 | 18031 |
15 | 97075 |
16 | 543815 |
17 | 3556863 |
18 | 24384071 |
19 | 196142765 |
20 | 1671349393 |
[1,1,1,1,1,1,5,19,43,103,349,1189,4335,18031, 97075,543815,3556863,24384071,196142765, 1671349393] |