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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 11 |
| 6 | 20 |
| 7 | 31 |
| 8 | 111 |
| 9 | 202 |
| 10 | 313 |
| 11 | 1121 |
| 12 | 2100 |
| 13 | 3221 |
| 14 | 11321 |
| 15 | 21202 |
| 16 | 33123 |
| 17 | 120331 |
| 18 | 220120 |
| 19 | 1001111 |
| 20 | 1221231 |
| 21 | 2223002 |
| 22 | 10110233 |
| 23 | 12333301 |
| 24 | 23110200 |
| 25 | 102110101 |
| 26 | 131220301 |
| 27 | 233331002 |
| 28 | 1031211303 |
| 29 | 1331202311 |