n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 13 |
6 | 35 |
7 | 96 |
8 | 267 |
9 | 750 |
10 | 2123 |
11 | 6046 |
12 | 17303 |
13 | 49721 |
14 | 143365 |
15 | 414584 |
16 | 1201917 |
17 | 3492117 |
18 | 10165779 |
19 | 29643870 |
20 | 86574831 |
21 | 253188111 |
22 | 741365049 |
23 | 2173243128 |
24 | 6377181825 |
25 | 18730782252 |
26 | 55062586341 |
27 | 161995031226 |
28 | 476941691177 |
29 | 1405155255055 |
[1,1,1,2,5,13,35,96,267,750,2123,6046,17303,49721, 143365,414584,1201917,3492117,10165779,29643870, 86574831,253188111,741365049,2173243128, 6377181825,18730782252,55062586341,161995031226, 476941691177,1405155255055] |