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 | 300 |
| 3 | 3003 |
| 4 | 3403 |
| 5 | 3444000 |
| 6 | 344334403 |
| 7 | 433430403 |
| 8 | 3434340003 |
| 9 | 4033034303403 |
| 10 | 3430000044444403 |
| 11 | 4333004330434300 |
| 12 | 300034434334030003 |
| 13 | 333343033034040030 |
| 14 | 44400033434030304430 |
| 15 | 3340004334430334340000 |
| 16 | 30340003004344033440000 |
| 17 | 4430044300033330340443003 |