Number of inequivalent vertex colorings of connected graphs on n unlabeled vertices.

A340027

Number of inequivalent vertex colorings of connected graphs on n unlabeled vertices.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =7a(4) =50a(5) =520a(6) =10665a(7) =400220a(8) =29204589a(9) =4143245857

External references