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 | -431 |
| 2 | -255583 |
| 3 | -35570638 |
| 4 | -91171007 |
| 5 | 2486784401 |
| 6 | 29023111918 |
| 7 | 22856131408177 |
| 8 | 1852951469375105 |
| 9 | 1350851394985294310 |
| 10 | 12157664947056928801 |
| 11 | 984770900976342015089 |
| 12 | 8862938117851348434466 |
| 13 | 6461081889221243795253265 |
| 14 | 523347633027349958757558113 |