n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 23 |
5 | 103 |
6 | 513 |
7 | 2763 |
8 | 15816 |
9 | 95109 |
10 | 595873 |
11 | 3865396 |
12 | 25837360 |
13 | 177275162 |
14 | 1244621410 |
15 | 8918587896 |
16 | 65085848546 |
17 | 482852672433 |
18 | 3635811839722 |
19 | 27749901618649 |
20 | 214430320809516 |
21 | 1675833302839457 |
22 | 13234389150662469 |
23 | 105525920568921495 |
24 | 848962775349348810 |
[1,1,2,6,23,103,513,2763,15816,95109,595873, 3865396,25837360,177275162,1244621410,8918587896, 65085848546,482852672433,3635811839722, 27749901618649,214430320809516,1675833302839457, 13234389150662469,105525920568921495, 848962775349348810] |