n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 13 |
6 | 46 |
7 | 172 |
8 | 777 |
9 | 3783 |
10 | 20074 |
11 | 111604 |
12 | 646409 |
13 | 3846640 |
14 | 23410035 |
15 | 144965988 |
16 | 910898943 |
17 | 5794179218 |
18 | 37248630398 |
19 | 241676806702 |
20 | 1580880366039 |
21 | 10416314047854 |
22 | 69080674190341 |
23 | 460841447382976 |
24 | 3090747326749823 |
[1,1,2,5,13,46,172,777,3783,20074,111604,646409, 3846640,23410035,144965988,910898943,5794179218, 37248630398,241676806702,1580880366039, 10416314047854,69080674190341,460841447382976, 3090747326749823] |