n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 3 |
7 | 13 |
8 | 31 |
9 | 59 |
10 | 133 |
11 | 487 |
12 | 1853 |
13 | 8419 |
14 | 38423 |
15 | 183353 |
16 | 1033531 |
17 | 6717069 |
18 | 50468649 |
19 | 417543651 |
20 | 3765006993 |
21 | 38269269195 |
22 | 435116516817 |
[1,1,1,1,1,3,13,31,59,133,487,1853,8419,38423, 183353,1033531,6717069,50468649,417543651, 3765006993,38269269195,435116516817] |