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 | 29 |
| 3 | 353 |
| 4 | 4889 |
| 5 | 72353 |
| 6 | 105312291668560568089831550410013687058921146068446092937783402353 |