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 | -178 |
| 3 | -5296 |
| 4 | 86860 |
| 5 | 5821408 |
| 6 | -58529336 |
| 7 | -8920919104 |
| 8 | 27781342352 |
| 9 | 17493150124160 |
| 10 | 79437437350624 |
| 11 | -41697923801662208 |
| 12 | -545045848640658752 |
| 13 | 116730403930901782016 |
| 14 | 2648557471270726689920 |
| 15 | -374294148747729423950848 |
| 16 | -12608616810694573276016384 |