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 | 5555 |
| 2 | 15555 |
| 3 | 25555 |
| 4 | 35555 |
| 5 | 45555 |
| 6 | 50555 |
| 7 | 51555 |
| 8 | 52555 |
| 9 | 53555 |
| 10 | 54555 |
| 11 | 55055 |
| 12 | 55155 |
| 13 | 55255 |
| 14 | 55355 |
| 15 | 55455 |
| 16 | 55505 |
| 17 | 55515 |
| 18 | 55525 |
| 19 | 55535 |
| 20 | 55545 |
| 21 | 55550 |
| 22 | 55551 |
| 23 | 55552 |
| 24 | 55553 |
| 25 | 55554 |
| 26 | 55556 |
| 27 | 55557 |
| 28 | 55558 |
| 29 | 55559 |
| 30 | 55565 |
| 31 | 55575 |