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 | 100 |
| 2 | 210 |
| 3 | 1211 |
| 4 | 2221 |
| 5 | 3331 |
| 6 | 4442 |
| 7 | 14543 |
| 8 | 24653 |
| 9 | 35654 |
| 10 | 46664 |
| 11 | 146665 |
| 12 | 246675 |
| 13 | 346686 |
| 14 | 446796 |
| 15 | 546907 |
| 16 | 648017 |
| 17 | 758018 |
| 18 | 868029 |
| 19 | 978140 |
| 20 | 1089141 |
| 21 | 1200151 |
| 22 | 1311261 |
| 23 | 2311262 |
| 24 | 3311363 |
| 25 | 4312373 |
| 26 | 5313474 |
| 27 | 6323484 |
| 28 | 7333585 |
| 29 | 8343695 |