n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 19 |
6 | 63 |
7 | 220 |
8 | 795 |
9 | 2942 |
10 | 11099 |
11 | 42536 |
12 | 165126 |
13 | 647955 |
14 | 2565946 |
15 | 10241616 |
16 | 41158598 |
17 | 166402323 |
18 | 676338003 |
19 | 2761988994 |
20 | 11327162406 |
21 | 46631572295 |
22 | 192638451780 |
23 | 798316442580 |
24 | 3317866307145 |
25 | 13825837134096 |
[0,1,1,2,6,19,63,220,795,2942,11099,42536,165126, 647955,2565946,10241616,41158598,166402323, 676338003,2761988994,11327162406,46631572295, 192638451780,798316442580,3317866307145, 13825837134096] |