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 | 47 |
| 2 | 9684836827 |
| 3 | 869333244926326187979597262939 |
| 4 | 56436777630861204610228497995848224493886299348863214641450495790307809339190661333386939668397177299125252187 |