A033555 Duplicate of A130134.
2, 4, 8, 248, 17608, 90148, 106978, 253828, 364808
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.