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 | 8 |
| 2 | -994 |
| 3 | -24880 |
| 4 | 2955916 |
| 5 | 128939488 |
| 6 | -14605279736 |
| 7 | -935350107712 |
| 8 | 100683900863120 |
| 9 | 8722274518579328 |
| 10 | -888933907869994016 |
| 11 | -99393135669529242368 |
| 12 | 9550267734434756419264 |
| 13 | 1338297392335821312458240 |
| 14 | -120648003280729069290891136 |
| 15 | -20788045001524017834458579968 |