Consider the family of multigraphs enriched by the species of odd sets. Sequence gives number of those multigraphs with n loops and edges.

A098637

Consider the family of multigraphs enriched by the species of odd sets. Sequence gives number of those multigraphs with n loops and edges.

Terms

    a(0) =1a(1) =2a(2) =7a(3) =45a(4) =431a(5) =5677a(6) =97304a(7) =2086120a(8) =54337094a(9) =1681862711a(10) =60786960947

External references