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 | -2 |
| 2 | 12 |
| 3 | -122 |
| 4 | 1792 |
| 5 | -35282 |
| 6 | 889152 |
| 7 | -27747722 |
| 8 | 1045556992 |
| 9 | -46640267042 |
| 10 | 2424156352512 |
| 11 | -144890071612442 |
| 12 | 9849171061952512 |
| 13 | -754330752297972722 |
| 14 | 64566114865428283392 |