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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 401 |
| 6 | 50250313 |
| 7 | 13058251494934169005517674 |
| 8 | 2711319949800838662068317571116321157238013748056632969662193456875554487084437 |