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 | 2 |
| 2 | 3 |
| 3 | 11 |
| 4 | 13 |
| 5 | 31 |
| 6 | 101 |
| 7 | 103 |
| 8 | 133 |
| 9 | 331 |
| 10 | 1121 |
| 11 | 1223 |
| 12 | 1333 |
| 13 | 20021 |
| 14 | 21133 |
| 15 | 103333 |
| 16 | 202123 |
| 17 | 203221 |
| 18 | 302101 |
| 19 | 1002131 |
| 20 | 1011013 |
| 21 | 2113121 |
| 22 | 2123111 |
| 23 | 2233031 |
| 24 | 10313201 |
| 25 | 11103011 |
| 26 | 11222221 |
| 27 | 22313101 |
| 28 | 111003203 |
| 29 | 122332213 |
| 30 | 200033101 |
| 31 | 310300123 |
| 32 | 2320301213 |
| 33 | 3101310221 |
| 34 | 10303010323 |