n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 5 |
6 | 13 |
7 | 35 |
8 | 101 |
9 | 299 |
10 | 916 |
11 | 2859 |
12 | 9087 |
13 | 29247 |
14 | 95188 |
15 | 312490 |
16 | 1033715 |
17 | 3441280 |
18 | 11520726 |
19 | 38758234 |
20 | 130962986 |
21 | 444251957 |
22 | 1512321767 |
23 | 5164750890 |
24 | 17689837577 |
25 | 60752024243 |
26 | 209154519704 |
27 | 721707099632 |
28 | 2495565928527 |
29 | 8646220929912 |
30 | 30010588561120 |
[0,1,1,2,5,13,35,101,299,916,2859,9087,29247, 95188,312490,1033715,3441280,11520726,38758234, 130962986,444251957,1512321767,5164750890, 17689837577,60752024243,209154519704,721707099632, 2495565928527,8646220929912,30010588561120] |