n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 17 |
5 | 62 |
6 | 258 |
7 | 1050 |
8 | 4365 |
9 | 18012 |
10 | 73945 |
11 | 301073 |
12 | 1214876 |
13 | 4852899 |
14 | 19187598 |
15 | 75070201 |
16 | 290659230 |
17 | 1113785613 |
18 | 4224773811 |
19 | 15866483556 |
20 | 59011553910 |
21 | 217410395916 |
22 | 793635925091 |
23 | 2871246090593 |
24 | 10297627606547 |
25 | 36620869115355 |
26 | 129166280330900 |
[1,1,2,5,17,62,258,1050,4365,18012,73945,301073, 1214876,4852899,19187598,75070201,290659230, 1113785613,4224773811,15866483556,59011553910, 217410395916,793635925091,2871246090593, 10297627606547,36620869115355,129166280330900] |