n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 8 |
5 | 19 |
6 | 67 |
7 | 331 |
8 | 2221 |
9 | 19577 |
10 | 219613 |
11 | 3042161 |
12 | 50728129 |
13 | 997525853 |
14 | 22742734291 |
15 | 592821132889 |
16 | 17461204521323 |
17 | 575411103069067 |
18 | 21034688742654437 |
19 | 846729487306354343 |
[1,2,4,8,19,67,331,2221,19577,219613,3042161, 50728129,997525853,22742734291,592821132889, 17461204521323,575411103069067,21034688742654437, 846729487306354343] |