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 | 3778888999 |
| 2 | 3778889899 |
| 3 | 3778889989 |
| 4 | 3778889998 |
| 5 | 3778898899 |
| 6 | 3778898989 |
| 7 | 3778898998 |
| 8 | 3778899889 |
| 9 | 3778899898 |
| 10 | 3778899988 |
| 11 | 3778988899 |
| 12 | 3778988989 |
| 13 | 3778988998 |
| 14 | 3778989889 |
| 15 | 3778989898 |
| 16 | 3778989988 |
| 17 | 3778998889 |
| 18 | 3778998898 |
| 19 | 3778998988 |
| 20 | 3778999888 |
| 21 | 3779888899 |
| 22 | 3779888989 |