n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 10 |
3 | 34 |
4 | 117 |
5 | 405 |
6 | 1407 |
7 | 4899 |
8 | 17083 |
9 | 59629 |
10 | 208284 |
11 | 727900 |
12 | 2544751 |
13 | 8898873 |
14 | 31125138 |
15 | 108881166 |
16 | 380928795 |
17 | 1332824049 |
18 | 4663705782 |
19 | 16319702046 |
20 | 57109857519 |
21 | 199859075307 |
22 | 699435489795 |
23 | 2447823832671 |
24 | 8566818534141 |
25 | 29982268505595 |
26 | 104933418068332 |
[1,3,10,34,117,405,1407,4899,17083,59629,208284, 727900,2544751,8898873,31125138,108881166, 380928795,1332824049,4663705782,16319702046, 57109857519,199859075307,699435489795, 2447823832671,8566818534141,29982268505595, 104933418068332] |