n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 3 |
5 | 7 |
6 | 15 |
7 | 52 |
8 | 236 |
9 | 2018 |
10 | 33044 |
11 | 1181670 |
12 | 87720798 |
13 | 12886156666 |
14 | 3633055848955 |
15 | 1944000061673516 |
16 | 1967881435350411681 |
17 | 3768516013573481061951 |
18 | 13670271805989797561408684 |
[1,1,2,3,7,15,52,236,2018,33044,1181670,87720798, 12886156666,3633055848955,1944000061673516, 1967881435350411681,3768516013573481061951, 13670271805989797561408684] |