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 | 0 |
| 2 | 4 |
| 3 | 53 |
| 4 | 585 |
| 5 | 6274 |
| 6 | 62515 |
| 7 | 625369 |
| 8 | 6251231 |
| 9 | 62504587 |
| 10 | 625010556 |
| 11 | 6249958503 |
| 12 | 62499878794 |