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 | 1 |
| 2 | 22 |
| 3 | 236 |
| 4 | 244 |
| 5 | 333 |
| 6 | 2488 |
| 7 | 2666 |
| 8 | 3366 |
| 9 | 3446 |
| 10 | 4444 |
| 11 | 26999 |
| 12 | 28888 |
| 13 | 33999 |
| 14 | 34688 |
| 15 | 36666 |
| 16 | 44488 |
| 17 | 44666 |
| 18 | 55555 |
| 19 | 366999 |
| 20 | 368888 |
| 21 | 446999 |
| 22 | 448888 |
| 23 | 466688 |
| 24 | 666666 |
| 25 | 3999999 |
| 26 | 4688999 |
| 27 | 4888888 |
| 28 | 6666999 |
| 29 | 6668888 |
| 30 | 7777777 |
| 31 | 66999999 |
| 32 | 68888999 |
| 33 | 88888888 |
| 34 | 999999999 |