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 | 3 |
| 2 | 43 |
| 3 | 433 |
| 4 | 443 |
| 5 | 3343 |
| 6 | 3433 |
| 7 | 4003 |
| 8 | 30403 |
| 9 | 33343 |
| 10 | 33403 |
| 11 | 34033 |
| 12 | 34303 |
| 13 | 34403 |
| 14 | 40343 |
| 15 | 40433 |
| 16 | 43003 |
| 17 | 43403 |
| 18 | 300043 |
| 19 | 300343 |
| 20 | 304033 |
| 21 | 304303 |
| 22 | 304433 |
| 23 | 330433 |
| 24 | 333433 |
| 25 | 334043 |
| 26 | 334333 |
| 27 | 334403 |
| 28 | 343303 |
| 29 | 343333 |
| 30 | 343433 |
| 31 | 400033 |
| 32 | 403003 |
| 33 | 403043 |
| 34 | 403433 |
| 35 | 430303 |
| 36 | 430333 |