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 | 191 |
| 3 | 12599173 |
| 4 | 53029063 |
| 5 | 22806625723729 |
| 6 | 27568116247823 |
| 7 | 41455846079203 |
| 8 | 289700908580893 |
| 9 | 1194728983756489 |
| 10 | 6275148480751847 |