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 | 697 |
| 2 | 2041 |
| 3 | 1570153 |
| 4 | 62722153 |
| 5 | 10604156641 |
| 6 | 13544168521 |
| 7 | 1792155938521 |