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) |
|---|---|
| 3 | 1 |
| 4 | -185 |
| 5 | 41107 |
| 6 | -8838005 |
| 7 | 1910490043 |
| 8 | -412612541285 |
| 9 | 89126228045659 |
| 10 | -19251196169490725 |
| 11 | 4158260859792814555 |
| 12 | -898184256176675135525 |
| 13 | 194007802557550502202331 |
| 14 | -41905685236388916561230885 |