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 | 2520 |
| 2 | 31320 |
| 3 | 1163160 |
| 4 | 2208384 |
| 5 | 3053232 |
| 6 | 6535296 |
| 7 | 13472928 |
| 8 | 123165600 |
| 9 | 365959296 |
| 10 | 4401782352 |
| 11 | 5517818880 |
| 12 | 612014161920 |