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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 25 |
| 3 | 900 |
| 4 | 864900 |
| 5 | 749661588900 |
| 6 | 561993796031809299372900 |
| 7 | 315837026779085485103717848762253067469831416900 |
| 8 | 99753027484652761836825641888570160231510113731744254964202314837133807826801896930564374920900 |
[5,25,900,864900,749661588900, 561993796031809299372900, 315837026779085485103717848762253067469831416900, 99753027484652761836825641888570160231510113731744\ 254964202314837133807826801896930564374920900] |