The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 25 |
| 2 | 575 |
| 3 | 12075 |
| 4 | 230025 |
| 5 | 3969225 |
| 6 | 62850375 |
| 7 | 953260875 |
| 8 | 14929952625 |
| 9 | 254408009625 |
| 10 | 4570418955375 |
| 11 | 82108573036875 |
| 12 | 1505493410045625 |
| 13 | 30038848390175625 |
| 14 | 641671899357864375 |
| 15 | 13683270472813816875 |
[1,25,575,12075,230025,3969225,62850375,953260875, 14929952625,254408009625,4570418955375, 82108573036875,1505493410045625,30038848390175625, 641671899357864375,13683270472813816875] |