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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | 22 |
| 11 | 123 |
| 12 | 1124 |
| 13 | 11125 |
| 14 | 11133 |
| 15 | 11222 |
| 16 | 111126 |
| 17 | 1111127 |
| 18 | 1111134 |
| 19 | 11111128 |
| 20 | 11111223 |
| 21 | 111111129 |
| 22 | 111111135 |
| 23 | 1111111144 |
| 24 | 11111111136 |
| 25 | 11111111224 |
| 26 | 111111112222 |
| 27 | 1111111111137 |
| 28 | 1111111111145 |
| 29 | 1111111111233 |