n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 14 |
5 | 52 |
6 | 256 |
7 | 1396 |
8 | 9064 |
9 | 62420 |
10 | 500000 |
11 | 4250180 |
12 | 40738880 |
13 | 410140060 |
14 | 4572668112 |
15 | 53214384548 |
16 | 676739353112 |
[1,1,2,4,14,52,256,1396,9064,62420,500000,4250180, 40738880,410140060,4572668112,53214384548, 676739353112] |