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 | 572 |
| 2 | 592 |
| 3 | 5992 |
| 4 | 599992 |
| 5 | 2014080 |
| 6 | 5999992 |
| 7 | 594637872 |
| 8 | 599999992 |
| 9 | 599999999992 |