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 | 15005 |
| 2 | 792070839820228500005 |
| 3 | 311759807762174781605301007201736860141952393239819056256447450170889021063181630442743411596527196875005 |