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 | 0 |
| 2 | -42 |
| 3 | -2772 |
| 4 | -5399688 |
| 5 | -704781084 |
| 6 | -943173698460 |
| 7 | -180121119486672 |
| 8 | -188146584694894350 |
| 9 | -46293152603021155692 |
| 10 | -40574254265781269371884 |
| 11 | -11963000065787771567311500 |
| 12 | -9221266403646163252100062068 |
| 13 | -3107813621461888912485774582588 |
| 14 | -2176998806586925223600540321844120 |