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 | 7 |
| 2 | 91 |
| 3 | 1722 |
| 4 | 43764 |
| 5 | 1415799 |
| 6 | 56096733 |
| 7 | 2644883675 |
| 8 | 145131435225 |
| 9 | 9107198292451 |
| 10 | 644373208531066 |
| 11 | 50814103000624929 |
| 12 | 4423148359685316443 |
| 13 | 421540670702940409866 |
| 14 | 43680252604560889074884 |