n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 5 |
7 | 17 |
8 | 37 |
9 | 107 |
10 | 651 |
11 | 4763 |
12 | 31885 |
13 | 243507 |
14 | 2726593 |
15 | 39573223 |
16 | 647861719 |
17 | 12294997893 |
18 | 299566536047 |
19 | 9265546813073 |
20 | 344823799726629 |
[1,1,1,1,1,5,17,37,107,651,4763,31885,243507, 2726593,39573223,647861719,12294997893, 299566536047,9265546813073,344823799726629] |