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 | 98689 |
| 2 | 9686869 |
| 3 | 9809089 |
| 4 | 9888889 |
| 5 | 9889889 |
| 6 | 9896989 |
| 7 | 9908099 |
| 8 | 9980899 |
| 9 | 9989899 |
| 10 | 900808009 |
| 11 | 906686609 |
| 12 | 906868609 |
| 13 | 906989609 |
| 14 | 908000809 |
| 15 | 908060809 |
| 16 | 908808809 |
| 17 | 908888809 |
| 18 | 909868909 |
| 19 | 960898069 |
| 20 | 968606869 |
| 21 | 968666869 |
| 22 | 968868869 |
| 23 | 968898869 |