n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 1 |
5 | 25 |
6 | 145 |
7 | 1225 |
8 | 7105 |
9 | 28945 |
10 | 165025 |
11 | 4675825 |
12 | 62610625 |
13 | 961986025 |
14 | 10237051825 |
15 | 76785333625 |
16 | 824649450625 |
17 | 30519166302625 |
18 | 643373556450625 |
19 | 14253164811510625 |
20 | 221377260570090625 |
21 | 2460131161228365625 |
22 | 39063024216812220625 |
23 | 1791544805630470515625 |
[1,1,1,1,1,25,145,1225,7105,28945,165025,4675825, 62610625,961986025,10237051825,76785333625, 824649450625,30519166302625,643373556450625, 14253164811510625,221377260570090625, 2460131161228365625,39063024216812220625, 1791544805630470515625] |