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) |
|---|---|
| 2 | 0 |
| 3 | 72 |
| 4 | 9780 |
| 5 | 668362 |
| 6 | 173484536 |
| 7 | 10081326340 |
| 8 | 182802386772 |
| 9 | 1760679542512 |
| 10 | 11472302452452 |