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 | 11 |
| 3 | 211 |
| 4 | 2111 |
| 5 | 2221 |
| 6 | 12211 |
| 7 | 21121 |
| 8 | 21211 |
| 9 | 21221 |
| 10 | 22111 |
| 11 | 111121 |
| 12 | 111211 |
| 13 | 112111 |
| 14 | 112121 |
| 15 | 1111211 |
| 16 | 1121221 |
| 17 | 1212121 |
| 18 | 1212221 |
| 19 | 1221221 |
| 20 | 2121121 |
| 21 | 2211211 |
| 22 | 2221111 |
| 23 | 11221211 |
| 24 | 12111221 |
| 25 | 12121121 |
| 26 | 12121211 |
| 27 | 12122111 |
| 28 | 12122221 |
| 29 | 12212111 |
| 30 | 12222121 |