n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 39 |
4 | 212 |
5 | 1230 |
6 | 7458 |
7 | 46689 |
8 | 299463 |
9 | 1957723 |
10 | 12996879 |
11 | 87383754 |
12 | 593794311 |
13 | 4071599216 |
14 | 28136612051 |
15 | 195756911831 |
16 | 1370068168916 |
17 | 9639404836227 |
18 | 68138551870047 |
19 | 483682445360748 |
20 | 3446462104490724 |
21 | 24642148415136556 |
22 | 176743014104068411 |
[1,2,8,39,212,1230,7458,46689,299463,1957723, 12996879,87383754,593794311,4071599216, 28136612051,195756911831,1370068168916, 9639404836227,68138551870047,483682445360748, 3446462104490724,24642148415136556, 176743014104068411] |