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 | 192 |
| 2 | 21504 |
| 3 | 190080 |
| 4 | 10838016 |
| 5 | 16440 |
| 6 | 823616 |
| 7 | 74306 |