n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 11 |
5 | 41 |
6 | 162 |
7 | 715 |
8 | 3424 |
9 | 17686 |
10 | 97493 |
11 | 567986 |
12 | 3462537 |
13 | 21880951 |
14 | 142148644 |
15 | 942800317 |
16 | 6349172750 |
17 | 43233294236 |
18 | 296737912815 |
19 | 2048310985708 |
20 | 14196341292463 |
21 | 98674810415941 |
22 | 687263739609206 |
23 | 4793697038780159 |
[1,1,4,11,41,162,715,3424,17686,97493,567986, 3462537,21880951,142148644,942800317,6349172750, 43233294236,296737912815,2048310985708, 14196341292463,98674810415941,687263739609206, 4793697038780159] |