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 | -1512 |
| 2 | 712152 |
| 3 | -78097824 |
| 4 | -11474230824 |
| 5 | -498089967984 |
| 6 | -11088580243104 |
| 7 | -152351956669248 |
| 8 | -1474676091461160 |
| 9 | -10921529499813576 |
| 10 | -65490182325115632 |
| 11 | -331010378444247264 |
| 12 | -1452953351890984608 |
| 13 | -5665062963045803184 |
| 14 | -19968586384352171328 |