n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 1 |
3 | 3 |
4 | 2 |
5 | 35 |
6 | 32 |
7 | 315 |
8 | 746 |
9 | 2304 |
10 | 12422 |
11 | 27621 |
12 | 150729 |
13 | 465387 |
14 | 1762427 |
15 | 7239244 |
16 | 23799382 |
17 | 102216580 |
18 | 360900542 |
19 | 1416054762 |
20 | 5522838696 |
21 | 20534319262 |
22 | 82389314900 |
23 | 311135342409 |
24 | 1223933415631 |
25 | 4773363130810 |
26 | 18490946264039 |
27 | 73109087367264 |
28 | 284357219601461 |
[1,0,1,3,2,35,32,315,746,2304,12422,27621,150729, 465387,1762427,7239244,23799382,102216580, 360900542,1416054762,5522838696,20534319262, 82389314900,311135342409,1223933415631, 4773363130810,18490946264039,73109087367264, 284357219601461] |