Number of labeled Eulerian oriented graphs with n nodes.

A007081

Number of labeled Eulerian oriented graphs with n nodes.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =15a(5) =219a(6) =7839a(7) =777069a(8) =208836207a(9) =156458382975

External references