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 | 8989999 |
| 2 | 8999899 |
| 3 | 9989899 |
| 4 | 9999889 |
| 5 | 16999999 |
| 6 | 17989999 |
| 7 | 17999899 |
| 8 | 18889999 |
| 9 | 18899899 |
| 10 | 18899989 |
| 11 | 18979999 |
| 12 | 18989899 |
| 13 | 18998899 |
| 14 | 18999889 |
| 15 | 18999979 |
| 16 | 18999997 |
| 17 | 19889899 |
| 18 | 19899889 |
| 19 | 19979899 |
| 20 | 19987999 |
| 21 | 19988989 |
| 22 | 19989997 |
| 23 | 19999789 |
| 24 | 19999897 |
| 25 | 26998999 |
| 26 | 27799999 |