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 | 999 |
| 2 | 2558 |
| 3 | 3366 |
| 4 | 4444 |
| 5 | 12489 |
| 6 | 13377 |
| 7 | 22444 |
| 8 | 112668 |
| 9 | 113388 |
| 10 | 114455 |
| 11 | 122289 |
| 12 | 123336 |
| 13 | 222244 |
| 14 | 666666 |
| 15 | 1113399 |
| 16 | 1113468 |
| 17 | 1114449 |
| 18 | 1122455 |
| 19 | 1133334 |
| 20 | 1377789 |
| 21 | 1555888 |
| 22 | 2222224 |
| 23 | 2346669 |
| 24 | 3334689 |
| 25 | 3344499 |
| 26 | 4444448 |
| 27 | 11112778 |
| 28 | 11114466 |
| 29 | 11122368 |
| 30 | 11122449 |
| 31 | 11222255 |
| 32 | 11223333 |
| 33 | 11467779 |
| 34 | 12366666 |
| 35 | 13336668 |