Number of unlabeled bicolored bipartite graphs on 2n nodes having n nodes of each color with no edges between vertices of the same color and allowing the color classes to be interchanged.
A007139
Number of unlabeled bicolored bipartite graphs on 2n nodes having n nodes of each color with no edges between vertices of the same color and allowing the color classes to be interchanged.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =26a(4) =192a(5) =3014a(6) =127757a(7) =16853750a(8) =7343780765
External references
- oeis: A007139