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) |
|---|---|
| 0 | 2 |
| 1 | 29 |
| 2 | 293 |
| 3 | 2939 |
| 4 | 29399 |
| 5 | 293999 |
| 6 | 2939999 |
| 7 | 29399999 |