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 | 89 |
| 2 | 389 |
| 3 | 1289 |
| 4 | 1489 |
| 5 | 1789 |
| 6 | 1889 |
| 7 | 2089 |
| 8 | 2389 |
| 9 | 2689 |
| 10 | 2789 |
| 11 | 3089 |
| 12 | 3389 |
| 13 | 3889 |
| 14 | 3989 |
| 15 | 4289 |
| 16 | 4789 |
| 17 | 4889 |
| 18 | 5189 |
| 19 | 5689 |
| 20 | 6089 |
| 21 | 6389 |
| 22 | 6689 |
| 23 | 7489 |
| 24 | 7589 |
| 25 | 7789 |
| 26 | 8089 |
| 27 | 8389 |
| 28 | 8689 |
| 29 | 9689 |
| 30 | 10289 |
| 31 | 10589 |
| 32 | 10789 |
| 33 | 10889 |
| 34 | 11489 |
| 35 | 11689 |
| 36 | 11789 |
| 37 | 12289 |
| 38 | 12589 |
| 39 | 12689 |
| 40 | 12889 |