n | a(n) |
---|---|
1 | 1 |
2 | 5 |
3 | 25 |
4 | 126 |
5 | 630 |
6 | 3150 |
7 | 15751 |
8 | 78755 |
9 | 393775 |
10 | 1968876 |
11 | 9844380 |
12 | 49221900 |
13 | 246109501 |
14 | 1230547505 |
15 | 6152737525 |
16 | 30763687626 |
17 | 153818438130 |
18 | 769092190650 |
19 | 3845460953251 |
20 | 19227304766255 |
21 | 96136523831275 |
22 | 480682619156376 |
[1,5,25,126,630,3150,15751,78755,393775,1968876, 9844380,49221900,246109501,1230547505,6152737525, 30763687626,153818438130,769092190650, 3845460953251,19227304766255,96136523831275, 480682619156376] |