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 | 6 |
| 2 | 45 |
| 3 | 55 |
| 4 | 66 |
| 5 | 465 |
| 6 | 666 |
| 7 | 4465 |
| 8 | 4656 |
| 9 | 5565 |
| 10 | 6555 |
| 11 | 46665 |
| 12 | 544446 |
| 13 | 4465566 |
| 14 | 5456556 |
| 15 | 5656566 |
| 16 | 64564566 |
| 17 | 4565545455565 |
| 18 | 4664644554466 |
| 19 | 56466665456545 |
| 20 | 555445466565465 |
| 21 | 555445666545666 |
| 22 | 555665666566566 |
| 23 | 4446456564566646 |
| 24 | 6666664664655666 |
| 25 | 46566644555566656 |