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 | 55 |
| 2 | 595 |
| 3 | 5995 |
| 4 | 555985 |
| 5 | 85989999559555 |
| 6 | 5558888585898885 |
| 7 | 898989555999995895 |
| 8 | 559585958899855598985 |
| 9 | 988889885885555858595 |
| 10 | 85889898559958558998859955 |
| 11 | 5595888555988988898588558558585 |
| 12 | 8589985889588895598998885898885995 |
| 13 | 88988559899558559855895555589855985 |