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 | 8 |
| 2 | -98 |
| 3 | -3376 |
| 4 | 20620 |
| 5 | 2352608 |
| 6 | 2118664 |
| 7 | -2269785664 |
| 8 | -20560850288 |
| 9 | 2777155418240 |
| 10 | 52194963065824 |
| 11 | -4081432073022208 |
| 12 | -125662880767476032 |
| 13 | 6929000903815364096 |
| 14 | 320078034126827436160 |
| 15 | -13154349776838626280448 |
| 16 | -883024421142899680112384 |