Number of complementary pairs of directed graphs on n nodes. Also number of unlabeled digraphs with n nodes and an even number of arcs.
A054928
Number of complementary pairs of directed graphs on n nodes. Also number of unlabeled digraphs with n nodes and an even number of arcs.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =114a(4) =4872a(5) =770832a(6) =441038832a(7) =896679948304
External references
- oeis: A054928