n | a(n) |
---|---|
1 | 5 |
2 | 25 |
3 | 120 |
4 | 568 |
5 | 2648 |
6 | 12214 |
7 | 55836 |
8 | 253418 |
9 | 1143256 |
10 | 5131592 |
11 | 22934652 |
12 | 102124670 |
13 | 453300160 |
14 | 2006497722 |
15 | 8860136576 |
16 | 39040820448 |
17 | 171705037456 |
18 | 753921273870 |
19 | 3305432501828 |
20 | 14473039186090 |
21 | 63296720868120 |
22 | 276532411704016 |
[5,25,120,568,2648,12214,55836,253418,1143256, 5131592,22934652,102124670,453300160,2006497722, 8860136576,39040820448,171705037456,753921273870, 3305432501828,14473039186090,63296720868120, 276532411704016] |