n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 13 |
5 | 62 |
6 | 318 |
7 | 1721 |
8 | 9660 |
9 | 55710 |
10 | 328159 |
11 | 1965990 |
12 | 11941986 |
13 | 73377955 |
14 | 455278070 |
15 | 2848419729 |
16 | 17949945086 |
17 | 113831136362 |
18 | 725895938586 |
19 | 4651935111855 |
20 | 29944166532941 |
21 | 193516292714718 |
22 | 1255118085879061 |
23 | 8167158264606613 |
24 | 53303153257919970 |
25 | 348836650405783954 |
[1,1,3,13,62,318,1721,9660,55710,328159,1965990, 11941986,73377955,455278070,2848419729, 17949945086,113831136362,725895938586, 4651935111855,29944166532941,193516292714718, 1255118085879061,8167158264606613, 53303153257919970,348836650405783954] |