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 | 117 |
| 2 | 119817 |
| 3 | 13101687 |
| 4 | 119819817 |
| 5 | 13101801687 |
| 6 | 119819819817 |
| 7 | 11983101689817 |
| 8 | 13101801801687 |
| 9 | 119819819819817 |