n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 12 |
6 | 34 |
7 | 99 |
8 | 315 |
9 | 1042 |
10 | 3661 |
11 | 13354 |
12 | 51006 |
13 | 201561 |
14 | 826987 |
15 | 3498286 |
16 | 15277665 |
17 | 68578942 |
18 | 316519868 |
19 | 1497639547 |
20 | 7263576113 |
21 | 36035247374 |
22 | 182804409181 |
23 | 946808180148 |
24 | 5004540429504 |
25 | 26963932982089 |
26 | 148019711470333 |
[0,1,1,2,5,12,34,99,315,1042,3661,13354,51006, 201561,826987,3498286,15277665,68578942,316519868, 1497639547,7263576113,36035247374,182804409181, 946808180148,5004540429504,26963932982089, 148019711470333] |