n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 4 |
3 | 9 |
4 | 23 |
5 | 63 |
6 | 190 |
7 | 612 |
8 | 2056 |
9 | 7155 |
10 | 25482 |
11 | 92205 |
12 | 337594 |
13 | 1246863 |
14 | 4636390 |
15 | 17334801 |
16 | 65108062 |
17 | 245492244 |
18 | 928772650 |
19 | 3524337980 |
20 | 13409202676 |
21 | 51141124287 |
22 | 195470831356 |
23 | 748607855769 |
24 | 2872202028517 |
25 | 11038251159312 |
[1,2,4,9,23,63,190,612,2056,7155,25482,92205, 337594,1246863,4636390,17334801,65108062, 245492244,928772650,3524337980,13409202676, 51141124287,195470831356,748607855769, 2872202028517,11038251159312] |