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 | 46 |
| 2 | 658 |
| 3 | -103868 |
| 4 | -7656020 |
| 5 | 253581256 |
| 6 | 67477123576 |
| 7 | 885618857008 |
| 8 | -647933055794288 |
| 9 | -40134778914678560 |
| 10 | 6655977728057433376 |
| 11 | 891340052066655340096 |
| 12 | -65746928407518970839872 |
| 13 | -18619244257704074488953728 |
| 14 | 389682045181727146807062400 |