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 | 29 |
| 3 | 89 |
| 4 | 229 |
| 5 | 449 |
| 6 | 499 |
| 7 | 829 |
| 8 | 929 |
| 9 | 2999 |
| 10 | 4229 |
| 11 | 4289 |
| 12 | 4889 |
| 13 | 4999 |
| 14 | 8429 |
| 15 | 8849 |
| 16 | 8929 |
| 17 | 8999 |
| 18 | 9829 |
| 19 | 9929 |
| 20 | 9949 |
| 21 | 22229 |
| 22 | 24229 |
| 23 | 24499 |
| 24 | 24889 |
| 25 | 24989 |
| 26 | 28229 |
| 27 | 28289 |
| 28 | 28429 |
| 29 | 28499 |
| 30 | 28949 |
| 31 | 29429 |
| 32 | 29989 |
| 33 | 42299 |
| 34 | 42499 |
| 35 | 42829 |
| 36 | 42899 |
| 37 | 42929 |
| 38 | 42989 |
| 39 | 44249 |
| 40 | 44449 |
| 41 | 48299 |
| 42 | 48449 |