n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 27 |
6 | 84 |
7 | 270 |
8 | 904 |
9 | 3149 |
10 | 11221 |
11 | 41052 |
12 | 153615 |
13 | 585423 |
14 | 2266898 |
15 | 8899882 |
16 | 35367261 |
17 | 142063183 |
18 | 576212939 |
19 | 2357624559 |
20 | 9722575246 |
21 | 40382761328 |
22 | 168823553558 |
23 | 709990487405 |
24 | 3002235850977 |
25 | 12759119302740 |
26 | 54477236422389 |
27 | 233603326611414 |
28 | 1005725216037108 |
29 | 4346070952878284 |
[1,1,2,4,10,27,84,270,904,3149,11221,41052,153615, 585423,2266898,8899882,35367261,142063183, 576212939,2357624559,9722575246,40382761328, 168823553558,709990487405,3002235850977, 12759119302740,54477236422389,233603326611414, 1005725216037108,4346070952878284] |