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 | 7 |
| 3 | 337 |
| 4 | 38272739 |
| 5 | 56062005704198360319209 |
| 6 | 176199995814327287356671209104585864397055039072110696028654438846269 |