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 | 45 |
| 2 | 55 |
| 3 | 5747745 |
| 4 | 744574755 |
| 5 | 77545447574475 |
| 6 | 4745745457757444544544575 |
| 7 | 44477447457545755547775754555 |
| 8 | 547457575775574544754447747777455 |