n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 4 |
5 | 9 |
6 | 20 |
7 | 48 |
8 | 115 |
9 | 286 |
10 | 719 |
11 | 1842 |
12 | 4765 |
13 | 12482 |
14 | 32957 |
15 | 87756 |
16 | 235198 |
17 | 634261 |
18 | 1719312 |
19 | 4682952 |
20 | 12808650 |
21 | 35168306 |
22 | 96893138 |
23 | 267794711 |
24 | 742260014 |
25 | 2062792103 |
[1,1,2,4,9,20,48,115,286,719,1842,4765,12482, 32957,87756,235198,634261,1719312,4682952, 12808650,35168306,96893138,267794711,742260014, 2062792103] |