n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 15 |
4 | 45 |
5 | 120 |
6 | 331 |
7 | 855 |
8 | 2214 |
9 | 5545 |
10 | 13741 |
11 | 33362 |
12 | 80091 |
13 | 189339 |
14 | 442799 |
15 | 1023192 |
16 | 2340904 |
17 | 5302061 |
18 | 11902618 |
19 | 26488454 |
20 | 58479965 |
21 | 128120214 |
22 | 278680698 |
23 | 602009786 |
24 | 1292027222 |
25 | 2755684669 |
26 | 5842618668 |
27 | 12317175320 |
28 | 25825429276 |
29 | 53865355154 |
30 | 111786084504 |
31 | 230867856903 |
32 | 474585792077 |
33 | 971209629993 |
[1,5,15,45,120,331,855,2214,5545,13741,33362, 80091,189339,442799,1023192,2340904,5302061, 11902618,26488454,58479965,128120214,278680698, 602009786,1292027222,2755684669,5842618668, 12317175320,25825429276,53865355154,111786084504, 230867856903,474585792077,971209629993] |