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 | 41 |
| 3 | 617 |
| 4 | 15017 |
| 5 | 25935017 |
| 6 | 1651637417 |
| 7 | 13301522971817 |
| 8 | 41117342095090841723228045851817 |
| 9 | 2616218222822143606864564493635469851817 |