This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 5 |
| 1 | 5 |
| 2 | 25 |
| 3 | 15625 |
| 4 | 59604644775390625 |
| 5 | 752316384526264005099991383822237233803945956334136013765601092018187046051025390625 |