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 | 5 |
| 2 | 205 |
| 3 | 102251 |
| 4 | 733861607 |
| 5 | 83399309397669 |
| 6 | 161327438675038562165 |
| 7 | 5614157616366023545393324521 |