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 | 3313 |
| 2 | 3331 |
| 3 | 32233 |
| 4 | 32323 |
| 5 | 33223 |
| 6 | 123323 |
| 7 | 132233 |
| 8 | 223133 |
| 9 | 223313 |
| 10 | 223331 |
| 11 | 231323 |
| 12 | 233231 |
| 13 | 312233 |
| 14 | 321323 |
| 15 | 323123 |
| 16 | 3344443 |
| 17 | 3434443 |
| 18 | 3443443 |
| 19 | 4434343 |
| 20 | 4443433 |
| 21 | 14334443 |
| 22 | 14443343 |
| 23 | 14443433 |
| 24 | 31434443 |
| 25 | 31443443 |
| 26 | 33434441 |
| 27 | 33555553 |