n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 10 |
4 | 42 |
5 | 135 |
6 | 587 |
7 | 2117 |
8 | 9440 |
9 | 36222 |
10 | 164694 |
11 | 656791 |
12 | 3031172 |
13 | 12413214 |
14 | 57948607 |
15 | 241968630 |
16 | 1139741739 |
17 | 4830463288 |
18 | 22915599452 |
19 | 98276507899 |
20 | 468915380663 |
21 | 2030520732519 |
22 | 9734368014373 |
23 | 42492739197948 |
24 | 204517567273130 |
25 | 898863173003696 |
26 | 4340712959643123 |
27 | 19189286075324474 |
[1,1,4,10,42,135,587,2117,9440,36222,164694, 656791,3031172,12413214,57948607,241968630, 1139741739,4830463288,22915599452,98276507899, 468915380663,2030520732519,9734368014373, 42492739197948,204517567273130,898863173003696, 4340712959643123,19189286075324474] |