n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 25 |
3 | 115 |
4 | 530 |
5 | 2425 |
6 | 11100 |
7 | 50775 |
8 | 232275 |
9 | 1062500 |
10 | 4860250 |
11 | 22232375 |
12 | 101698250 |
13 | 465201250 |
14 | 2127983750 |
15 | 9734098125 |
16 | 44526969375 |
17 | 203681015625 |
18 | 931704015625 |
19 | 4261920875000 |
20 | 19495429065625 |
21 | 89178510250000 |
22 | 407931862578125 |
23 | 1866014626609375 |
24 | 8535765175875000 |
25 | 39045399804843750 |
26 | 178606512071015625 |
27 | 817004981729375000 |
[1,5,25,115,530,2425,11100,50775,232275,1062500, 4860250,22232375,101698250,465201250,2127983750, 9734098125,44526969375,203681015625,931704015625, 4261920875000,19495429065625,89178510250000, 407931862578125,1866014626609375,8535765175875000, 39045399804843750,178606512071015625, 817004981729375000] |