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 | 2 |
| 3 | 578 |
| 4 | 5345344 |
| 5 | 338179153563904 |
| 6 | 3466035612421233748051968 |
| 7 | 1923520756594004458835713813690433667072 |
| 8 | 546551001653798242379097661463711497556444294267384365056 |