n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 20 |
4 | 70 |
5 | 252 |
6 | 922 |
7 | 3404 |
8 | 12630 |
9 | 46988 |
10 | 175066 |
11 | 652764 |
12 | 2434966 |
13 | 9085052 |
14 | 33901146 |
15 | 126511340 |
16 | 472127830 |
17 | 1761967212 |
18 | 6575675482 |
19 | 24540603644 |
20 | 91586476950 |
21 | 341804779868 |
22 | 1275631593946 |
23 | 4760719498764 |
24 | 17767242206806 |
[1,2,6,20,70,252,922,3404,12630,46988,175066, 652764,2434966,9085052,33901146,126511340, 472127830,1761967212,6575675482,24540603644, 91586476950,341804779868,1275631593946, 4760719498764,17767242206806] |