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 | 1 |
| 1 | 5 |
| 2 | 265 |
| 3 | 37220045 |
| 4 | 103124220135120334842385 |
| 5 | 2193370648451279691104497113491599222165108730278225579497595691360405 |