n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 24 |
4 | 114 |
5 | 541 |
6 | 2573 |
7 | 12275 |
8 | 58747 |
9 | 282003 |
10 | 1357407 |
11 | 6549906 |
12 | 31675020 |
13 | 153481299 |
14 | 745011075 |
15 | 3622111560 |
16 | 17635418730 |
17 | 85975792075 |
18 | 419644943495 |
19 | 2050493623760 |
20 | 10029194506990 |
21 | 49098707209695 |
22 | 240568930012575 |
[1,5,24,114,541,2573,12275,58747,282003,1357407, 6549906,31675020,153481299,745011075,3622111560, 17635418730,85975792075,419644943495, 2050493623760,10029194506990,49098707209695, 240568930012575] |