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 | 2 |
| 2 | -1918 |
| 3 | -11524 |
| 4 | 11036140 |
| 5 | 110668792 |
| 6 | -105835967816 |
| 7 | -1487904444976 |
| 8 | 1420941302106512 |
| 9 | 25719901350164000 |
| 10 | -24528002841138116576 |
| 11 | -543392509632428313152 |
| 12 | 517484251048077204023488 |
| 13 | 13567773344258481022584704 |
| 14 | -12902725949998740057685701760 |