n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 23 |
5 | 63 |
6 | 197 |
7 | 588 |
8 | 1892 |
9 | 6140 |
10 | 20734 |
11 | 71472 |
12 | 254090 |
13 | 923900 |
14 | 3446572 |
15 | 13149295 |
16 | 51316445 |
17 | 204556612 |
18 | 832467052 |
19 | 3455533022 |
20 | 14621598811 |
21 | 63023667027 |
22 | 276559371189 |
23 | 1234802595648 |
24 | 5606647482646 |
25 | 25875459311317 |
26 | 121324797470067 |
27 | 577692044073205 |
[1,1,3,8,23,63,197,588,1892,6140,20734,71472, 254090,923900,3446572,13149295,51316445,204556612, 832467052,3455533022,14621598811,63023667027, 276559371189,1234802595648,5606647482646, 25875459311317,121324797470067,577692044073205] |