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 | 2 |
| 2 | 22 |
| 3 | 242 |
| 4 | 24442 |
| 5 | 24466442 |
| 6 | 243465564342 |
| 7 | 2434655886885564342 |
| 8 | 2434655886887998997886885564342 |