n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 10 |
4 | 38 |
5 | 154 |
6 | 654 |
7 | 2871 |
8 | 12925 |
9 | 59345 |
10 | 276835 |
11 | 1308320 |
12 | 6250832 |
13 | 30142360 |
14 | 146510216 |
15 | 717061938 |
16 | 3530808798 |
17 | 17478955570 |
18 | 86941210950 |
19 | 434299921440 |
20 | 2177832612120 |
21 | 10959042823020 |
22 | 55322023332420 |
23 | 280080119609550 |
24 | 1421744205767418 |
25 | 7234759677699954 |
[1,1,3,10,38,154,654,2871,12925,59345,276835, 1308320,6250832,30142360,146510216,717061938, 3530808798,17478955570,86941210950,434299921440, 2177832612120,10959042823020,55322023332420, 280080119609550,1421744205767418,7234759677699954] |