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 | 696 |
| 2 | -34632 |
| 3 | -167186976 |
| 4 | -64422848328 |
| 5 | -11387712944304 |
| 6 | -1037073232984608 |
| 7 | -48892286706157632 |
| 8 | -1378097272692189000 |
| 9 | -26188038166214133672 |
| 10 | -364779879415169299632 |
| 11 | -3952277018332870144608 |
| 12 | -34798618196377082329632 |
| 13 | -257403706082325167732976 |