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 | 89 |
| 4 | 1212 |
| 5 | 13863 |
| 6 | 150232 |
| 7 | 1574973 |
| 8 | 16246940 |
| 9 | 165826606 |
| 10 | 1681871718 |
| 11 | 16988116409 |
| 12 | 171128671374 |