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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 10 |
| 5 | 20 |
| 6 | 21 |
| 7 | 102 |
| 8 | 110 |
| 9 | 210 |
| 10 | 211 |
| 11 | 212 |
| 12 | 220 |
| 13 | 1011 |
| 14 | 1112 |
| 15 | 1121 |
| 16 | 2022 |
| 17 | 12101 |
| 18 | 12102 |
| 19 | 12112 |
| 20 | 12122 |
| 21 | 10121021 |
| 22 | 10121022 |
| 23 | 12222212 |
| 24 | 102121110 |
| 25 | 102121120 |
| 26 | 200121022 |
| 27 | 1001120220 |
| 28 | 2011001102 |
| 29 | 2012012221 |
| 30 | 2100221021 |
| 31 | 2102111111 |