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 | 2998999 |
| 2 | 3899989 |
| 3 | 3979999 |
| 4 | 3989989 |
| 5 | 3998899 |
| 6 | 4789999 |
| 7 | 4798999 |
| 8 | 4888999 |
| 9 | 4899997 |
| 10 | 4987999 |
| 11 | 4989979 |
| 12 | 4989997 |
| 13 | 4997899 |
| 14 | 4997989 |
| 15 | 4998979 |
| 16 | 4998997 |
| 17 | 4999879 |
| 18 | 5599999 |
| 19 | 5699899 |
| 20 | 5699989 |
| 21 | 5779999 |
| 22 | 5789899 |
| 23 | 5799799 |
| 24 | 5869999 |