n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 23 |
5 | 102 |
6 | 499 |
7 | 2625 |
8 | 14601 |
9 | 84847 |
10 | 510614 |
11 | 3161964 |
12 | 20050770 |
13 | 129718404 |
14 | 853689031 |
15 | 5701759424 |
16 | 38574689104 |
17 | 263936457042 |
18 | 1824032887177 |
19 | 12718193293888 |
20 | 89386742081688 |
21 | 632746535420834 |
22 | 4508140253686638 |
23 | 32308561883462867 |
24 | 232790342330880572 |
[1,1,2,6,23,102,499,2625,14601,84847,510614, 3161964,20050770,129718404,853689031,5701759424, 38574689104,263936457042,1824032887177, 12718193293888,89386742081688,632746535420834, 4508140253686638,32308561883462867, 232790342330880572] |