n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 12 |
6 | 35 |
7 | 108 |
8 | 368 |
9 | 1283 |
10 | 4639 |
11 | 17003 |
12 | 63222 |
13 | 236819 |
14 | 893515 |
15 | 3387953 |
16 | 12904855 |
17 | 49335965 |
18 | 189243115 |
[1,1,2,5,12,35,108,368,1283,4639,17003,63222, 236819,893515,3387953,12904855,49335965,189243115] |