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 | 2111 |
| 3 | 2221 |
| 4 | 10211 |
| 5 | 12011 |
| 6 | 12211 |
| 7 | 20201 |
| 8 | 21011 |
| 9 | 21101 |
| 10 | 21211 |
| 11 | 22111 |
| 12 | 101021 |
| 13 | 101111 |
| 14 | 102101 |
| 15 | 102121 |
| 16 | 110221 |
| 17 | 111121 |
| 18 | 111211 |
| 19 | 120011 |
| 20 | 120121 |
| 21 | 121001 |
| 22 | 121021 |
| 23 | 122011 |
| 24 | 201101 |
| 25 | 202001 |
| 26 | 202021 |
| 27 | 210011 |
| 28 | 210101 |
| 29 | 1000211 |
| 30 | 1010201 |
| 31 | 1012201 |