A203925 3^n! - 2^n!.
1, 1, 5, 665, 282412759265, 1797010299914431210411850601513820123858571820477570761825
Offset: 0
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.