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) |
|---|---|
| 1 | 3 |
| 2 | 9 |
| 3 | 2401 |
| 4 | 2401 |
| 5 | 5909761 |
| 6 | 1611308700 |
| 7 | 421138799640 |
| 8 | 2286831727304145 |
| 9 | 3948741978036988496 |