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 | 383 |
| 3 | 787 |
| 4 | 78887 |
| 5 | 9888889 |
| 6 | 188888881 |
| 7 | 3888888888883 |
| 8 | 188888888888881 |
| 9 | 3888888888888888888888888888883 |
| 10 | 18888888888888888888888888888888888888881 |