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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 9 |
| 4 | 324 |
| 5 | 777924 |
| 6 | 16810159716 |
| 7 | 69136555917409344 |
| 8 | 4549499535875623543259136 |
| 9 | 115306876482136485813839025883201536 |
| 10 | 73061199694724861313901918528002630365482598400 |