n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 1 |
6 | 1 |
7 | 1 |
8 | 1 |
9 | 4 |
10 | 7 |
11 | 14 |
12 | 21 |
13 | 40 |
14 | 79 |
15 | 252 |
16 | 611 |
17 | 2359 |
18 | 6199 |
19 | 23158 |
20 | 70484 |
21 | 325136 |
22 | 1222235 |
23 | 6869095 |
24 | 29506240 |
25 | 189032773 |
26 | 936666179 |
[1,1,1,1,1,1,1,1,4,7,14,21,40,79,252,611,2359, 6199,23158,70484,325136,1222235,6869095,29506240, 189032773,936666179] |