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 | 2 |
| 3 | 8 |
| 4 | 96 |
| 5 | 10368 |
| 6 | 108615168 |
| 7 | 11798392572168192 |
| 8 | 139202068568601556987554268864512 |
| 9 | 19377215893777651167043206536157390321290709180447278572301746176 |