n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 4 |
6 | 12 |
7 | 27 |
8 | 78 |
9 | 208 |
10 | 637 |
11 | 1870 |
12 | 5797 |
13 | 17866 |
14 | 56237 |
15 | 177573 |
16 | 566904 |
17 | 1818527 |
18 | 5874180 |
19 | 19065038 |
[1,1,1,1,3,4,12,27,78,208,637,1870,5797,17866, 56237,177573,566904,1818527,5874180,19065038] |