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 | 275 |
| 2 | 295 |
| 3 | 2995 |
| 4 | 299995 |
| 5 | 2999995 |
| 6 | 278736495 |
| 7 | 299999995 |
| 8 | 299999999995 |