n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 14 |
4 | 43 |
5 | 140 |
6 | 476 |
7 | 1664 |
8 | 5939 |
9 | 21518 |
10 | 78876 |
11 | 291784 |
12 | 1087441 |
13 | 4077662 |
14 | 15369327 |
15 | 58184110 |
16 | 221104527 |
17 | 842990294 |
18 | 3223339023 |
[1,2,5,14,43,140,476,1664,5939,21518,78876,291784, 1087441,4077662,15369327,58184110,221104527, 842990294,3223339023] |