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 | 36 |
| 2 | -386 |
| 3 | -135000 |
| 4 | -2912244 |
| 5 | 803439216 |
| 6 | 53415783816 |
| 7 | -6185340350496 |
| 8 | -851589691267440 |
| 9 | 52572710870646336 |
| 10 | 14783982337749774816 |
| 11 | -352049632685279478144 |
| 12 | -286207027989716394858816 |
| 13 | -3197683221510109228058880 |
| 14 | 6143086278048774757772750976 |