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) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 233 |
| 3 | 233 |
| 4 | 2233 |
| 5 | 1336 |
| 6 | 1446 |
| 7 | 2477 |
| 8 | 2477 |
| 9 | 12888 |
| 10 | 12888 |
| 11 | 12888 |
| 12 | 44677 |
| 13 | 115588 |
| 14 | 67788 |
| 15 | 67788 |
| 16 | 67788 |
| 17 | 67788 |
| 18 | 2334455 |
| 19 | 2255666 |
| 20 | 2255666 |
| 21 | 2444477 |
| 22 | 2444477 |
| 23 | 1122688 |
| 24 | 1122688 |
| 25 | 1125555 |
| 26 | 1125555 |
| 27 | 1125555 |
| 28 | 11337888 |
| 29 | 222224499 |
| 30 | 22244488 |