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) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 7 |
| 3 | 43 |
| 4 | 139 |
| 5 | 3263443 |
| 6 | 31051 |
| 7 | 6212157481 |
| 8 | 77366930214021991992277 |
| 9 | 35874380272246624152764569191134894955972560447869169859142453622851 |