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 | 186076800 |
| 2 | 3456573120 |
| 3 | 18924364800 |
| 4 | 325377803520 |
| 5 | 2666567816640 |
| 6 | 8538872307840 |
| 7 | 11169839116800 |