A087326 Erroneous version of A075031.
1, 4, 20, 20, 714, 714, 25550, 90180, 142803, 809300
Offset: 1
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.