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 | 2 |
| 2 | 548 |
| 3 | 585688 |
| 4 | 58591812 |
| 5 | 200824138 |
| 6 | 5773251280200207952 |
| 7 | 20832739723817975138362 |