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 | 81 |
| 3 | 5883 |
| 4 | 608855 |
| 5 | 74140718 |
| 6 | 9991366555 |
| 7 | 1461411174370 |
| 8 | 229731305080429 |
| 9 | 38440119395606004 |