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 | -1858 |
| 3 | -45616 |
| 4 | 10348300 |
| 5 | 433482208 |
| 6 | -95979305336 |
| 7 | -5766751265344 |
| 8 | 1245171563867792 |
| 9 | 98630939966871680 |
| 10 | -20749930192050092576 |
| 11 | -2061686107699674430208 |
| 12 | 422201535258725661800128 |
| 13 | 50928340670055096352718336 |
| 14 | -10141700834614078614916251520 |