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 | 675 |
| 3 | 11309768 |
| 4 | 878801253135 |
| 5 | 208241673295152024 |
| 6 | 118270071682117442287235 |
| 7 | 137788343929239264227213170608 |
| 8 | 295355309179742652677310128859789375 |