A030255 Number of nonisomorphic commutative groupoids with no symmetry.
1, 1, 4, 116, 43428, 254197133
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.