Number of complementary pairs of graphs on n nodes. Also number of unlabeled graphs with n nodes and an even number of edges.
A007869
Number of complementary pairs of graphs on n nodes. Also number of unlabeled graphs with n nodes and an even number of edges.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =18a(5) =78a(6) =522a(7) =6178a(8) =137352a(9) =6002584a(10) =509498932a(11) =82545586656
External references
- oeis: A007869