n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 7 |
5 | 13 |
6 | 34 |
7 | 84 |
8 | 270 |
9 | 912 |
10 | 3755 |
11 | 17169 |
12 | 90953 |
13 | 538858 |
14 | 3586559 |
15 | 26459702 |
16 | 215517278 |
17 | 1925402918 |
18 | 18785105127 |
19 | 199301164172 |
[1,2,3,7,13,34,84,270,912,3755,17169,90953,538858, 3586559,26459702,215517278,1925402918,18785105127, 199301164172] |