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 | 2 |
| 2 | 5 |
| 3 | 503 |
| 4 | 8179 |
| 5 | 524269 |
| 6 | 2097131 |
| 7 | 36028797018963913 |
| 8 | 3705346855594118253554271520278013051304639509300498049262642688253220148477691 |