Number of digraphs on n unlabeled nodes with a global source and sink.

A350794

Number of digraphs on n unlabeled nodes with a global source and sink.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =20a(4) =574a(5) =48854a(6) =12444800a(7) =9849180230

External references