n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 10 |
3 | 40 |
4 | 181 |
5 | 884 |
6 | 4539 |
7 | 24142 |
8 | 131821 |
9 | 734577 |
10 | 4160626 |
11 | 23881695 |
12 | 138610418 |
13 | 812104884 |
14 | 4796598619 |
15 | 28529555072 |
16 | 170733683579 |
17 | 1027293807083 |
18 | 6211002743144 |
19 | 37713907549066 |
20 | 229894166951757 |
21 | 1406310771154682 |
22 | 8630254073158599 |
23 | 53117142215866687 |
24 | 327800429456036588 |
[1,3,10,40,181,884,4539,24142,131821,734577, 4160626,23881695,138610418,812104884,4796598619, 28529555072,170733683579,1027293807083, 6211002743144,37713907549066,229894166951757, 1406310771154682,8630254073158599, 53117142215866687,327800429456036588] |