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 | 23 |
| 2 | 31 |
| 3 | 103 |
| 4 | 751 |
| 5 | 4782991 |
| 6 | 282429536503 |
| 7 | 50031545098999729 |
| 8 | 49269609804781974438694403402127765889 |