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 | 60 |
| 2 | 1678 |
| 3 | -129960 |
| 4 | -17472948 |
| 5 | -49244400 |
| 6 | 164960366280 |
| 7 | 10465508397600 |
| 8 | -1591446264075120 |
| 9 | -256404432966004800 |
| 10 | 12144571498011137760 |
| 11 | 5656767491487280521600 |
| 12 | 82645518878285356774080 |
| 13 | -125508954290965516543737600 |
| 14 | -9595518192150768916981418880 |