Number of self-complementary directed 2-multigraphs on n nodes.

A052112

Number of self-complementary directed 2-multigraphs on n nodes.

Terms

    a(0) =1a(1) =2a(2) =14a(3) =159a(4) =7629a(5) =599456a(6) =226066304a(7) =139178815861

External references