n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 14 |
5 | 38 |
6 | 126 |
7 | 252 |
8 | 1662 |
9 | 7180 |
10 | 39430 |
11 | 111064 |
12 | 803876 |
13 | 2863992 |
14 | 12123360 |
15 | 24246720 |
16 | 329012784 |
17 | 2602608516 |
[1,2,4,14,38,126,252,1662,7180,39430,111064, 803876,2863992,12123360,24246720,329012784, 2602608516] |