n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 6 |
5 | 19 |
6 | 57 |
7 | 177 |
8 | 586 |
9 | 1950 |
10 | 6642 |
11 | 22990 |
12 | 80400 |
13 | 284346 |
14 | 1014237 |
15 | 3644841 |
16 | 13185810 |
17 | 47976382 |
18 | 175458798 |
19 | 644630064 |
20 | 2378084209 |
21 | 8805524949 |
22 | 32714828733 |
23 | 121917589291 |
24 | 455625246297 |
25 | 1707142362234 |
26 | 6411576477380 |
27 | 24133229559243 |
28 | 91023263056629 |
29 | 343964618949140 |
30 | 1302098673500514 |
[1,1,3,6,19,57,177,586,1950,6642,22990,80400, 284346,1014237,3644841,13185810,47976382, 175458798,644630064,2378084209,8805524949, 32714828733,121917589291,455625246297, 1707142362234,6411576477380,24133229559243, 91023263056629,343964618949140,1302098673500514] |