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 | 58 |
| 2 | 1442 |
| 3 | -139316 |
| 4 | -16394900 |
| 5 | 120157208 |
| 6 | 164524107064 |
| 7 | 8156745287056 |
| 8 | -1740416109789808 |
| 9 | -226362249901581920 |
| 10 | 16976707372852347424 |
| 11 | 5335331470733840652992 |
| 12 | -49472321974281571364672 |
| 13 | -125923479715513631959758464 |
| 14 | -6067446386650391311548296320 |