n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 13 |
6 | 49 |
7 | 201 |
8 | 940 |
9 | 4643 |
10 | 24037 |
11 | 127859 |
12 | 696365 |
13 | 3858759 |
14 | 21704863 |
15 | 123619126 |
16 | 711787259 |
17 | 4137614454 |
18 | 24256010068 |
19 | 143271593982 |
20 | 852001881614 |
21 | 5097719884665 |
22 | 30670572676389 |
23 | 185466705697057 |
[1,1,1,2,5,13,49,201,940,4643,24037,127859,696365, 3858759,21704863,123619126,711787259,4137614454, 24256010068,143271593982,852001881614, 5097719884665,30670572676389,185466705697057] |