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) |
|---|---|
| 0 | 9 |
| 1 | 169 |
| 2 | 12769 |
| 3 | 1238769 |
| 4 | 123498769 |
| 5 | 12346098769 |
| 6 | 1234572098769 |
| 7 | 123456832098769 |
| 8 | 12345679432098769 |
| 9 | 1234567905432098769 |
| 10 | 123456790165432098769 |