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 | 9 |
| 3 | 593 |
| 4 | 304857 |
| 5 | 1249312673 |
| 6 | 40939981188777 |
| 7 | 10732252327798007281 |
| 8 | 22507185898866512901924729 |
| 9 | 377607964391970470904956530918721 |
| 10 | 50681683810611444451901001718927186370889 |