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 | 6 |
| 2 | 324 |
| 3 | 157464 |
| 4 | 688747536 |
| 5 | 27113235502176 |
| 6 | 9606056659007943744 |
| 7 | 30630314141519043787530624 |
| 8 | 879023057994883196072409366855936 |
| 9 | 227034361980435338213503810877004745115136 |