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 | 3 |
| 3 | 7 |
| 4 | 63 |
| 5 | 7179 |
| 6 | 142233093 |
| 7 | 64600110035609517 |
| 8 | 5529148350206824361693538422450743 |
| 9 | 39876890198849678230595649918157265458164953427845442505533508344048 |