n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 11 |
5 | 31 |
6 | 97 |
7 | 309 |
8 | 1026 |
9 | 3466 |
10 | 11964 |
11 | 41856 |
12 | 148373 |
13 | 531233 |
14 | 1919313 |
15 | 6986745 |
16 | 25604367 |
17 | 94379887 |
18 | 349702606 |
19 | 1301729084 |
20 | 4865680876 |
21 | 18255350676 |
22 | 68724316775 |
23 | 259521249065 |
24 | 982796892300 |
25 | 3731493081316 |
26 | 14201727734640 |
[1,1,2,4,11,31,97,309,1026,3466,11964,41856, 148373,531233,1919313,6986745,25604367,94379887, 349702606,1301729084,4865680876,18255350676, 68724316775,259521249065,982796892300, 3731493081316,14201727734640] |