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 | 83 |
| 2 | 881 |
| 3 | 8887 |
| 4 | 88883 |
| 5 | 888887 |
| 6 | 28888883 |
| 7 | 88888883 |
| 8 | 888888883 |
| 9 | 48888888883 |
| 10 | 288888888889 |
| 11 | 888888888887 |
| 12 | 48888888888883 |
| 13 | 88888888888889 |
| 14 | 888888888888883 |
| 15 | 18888888888888883 |
| 16 | 88888888888888889 |
| 17 | 2888888888888888887 |
| 18 | 8888888888888888881 |
| 19 | 388888888888888888889 |