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 | 555 |
| 2 | 1555 |
| 3 | 2555 |
| 4 | 3555 |
| 5 | 4555 |
| 6 | 5055 |
| 7 | 5155 |
| 8 | 5255 |
| 9 | 5355 |
| 10 | 5455 |
| 11 | 5505 |
| 12 | 5515 |
| 13 | 5525 |
| 14 | 5535 |
| 15 | 5545 |
| 16 | 5550 |
| 17 | 5551 |
| 18 | 5552 |
| 19 | 5553 |
| 20 | 5554 |
| 21 | 5556 |
| 22 | 5557 |
| 23 | 5558 |
| 24 | 5559 |
| 25 | 5565 |
| 26 | 5575 |
| 27 | 5585 |
| 28 | 5595 |
| 29 | 5655 |
| 30 | 5755 |
| 31 | 5855 |
| 32 | 5955 |
| 33 | 6555 |
| 34 | 7555 |
| 35 | 8555 |
| 36 | 9555 |
| 37 | 10555 |