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 | 1 |
| 2 | 7 |
| 3 | 2228071 |
| 4 | 16888457 |
| 5 | 352978207 |
| 6 | 1737848873 |
| 7 | 77362855777 |
| 8 | 567442642711 |