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 | 3 |
| 2 | 81 |
| 3 | 12468 |
| 4 | 12271227 |
| 5 | 81269646503 |
| 6 | 3578849222737632 |
| 7 | 1043523305166893694120 |
| 8 | 2015556742069061275212434339 |