n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 2 |
4 | 5 |
5 | 10 |
6 | 25 |
7 | 54 |
8 | 125 |
9 | 282 |
10 | 641 |
11 | 1454 |
12 | 3301 |
13 | 7490 |
14 | 17001 |
15 | 38582 |
16 | 87565 |
17 | 198730 |
18 | 451025 |
19 | 1023614 |
20 | 2323125 |
21 | 5272402 |
22 | 11965881 |
23 | 27156934 |
24 | 61633501 |
25 | 139879130 |
26 | 317460001 |
27 | 720485262 |
28 | 1635163525 |
29 | 3711054050 |
30 | 8422351625 |
31 | 19114786774 |
[0,1,2,5,10,25,54,125,282,641,1454,3301,7490, 17001,38582,87565,198730,451025,1023614,2323125, 5272402,11965881,27156934,61633501,139879130, 317460001,720485262,1635163525,3711054050, 8422351625,19114786774] |