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 | 181 |
| 2 | 18181 |
| 3 | 78887 |
| 4 | 1880881 |
| 5 | 9888889 |
| 6 | 188868881 |
| 7 | 188888881 |
| 8 | 18888588881 |
| 9 | 1488888888841 |
| 10 | 7888886888887 |
| 11 | 3888888888883 |
| 12 | 188888858888881 |
| 13 | 188888888888881 |
| 14 | 38888888088888883 |
| 15 | 1688888888888888861 |
| 16 | 3888888882888888883 |
| 17 | 128888888888888888821 |