n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 6 |
4 | 19 |
5 | 62 |
6 | 239 |
7 | 1013 |
8 | 4723 |
9 | 23870 |
10 | 129779 |
11 | 753784 |
12 | 4651285 |
13 | 30349577 |
14 | 208575027 |
15 | 1504582526 |
16 | 11358446495 |
17 | 89501837358 |
18 | 734420232291 |
19 | 6262593615501 |
20 | 55392254339667 |
21 | 507335283474158 |
22 | 4804245661175599 |
23 | 46971060027956608 |
24 | 473534995965134505 |
25 | 4916730522706507665 |
[1,1,3,6,19,62,239,1013,4723,23870,129779,753784, 4651285,30349577,208575027,1504582526,11358446495, 89501837358,734420232291,6262593615501, 55392254339667,507335283474158,4804245661175599, 46971060027956608,473534995965134505, 4916730522706507665] |