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A099717 Consider the family of multigraphs enriched by the species of trees. Sequence gives number of those multigraphs with n loops and edges. 2

%I

%S 1,2,9,70,798,12230,238979,5746740,165778237,5626476014,221330040771,

%T 9950747684006

%N Consider the family of multigraphs enriched by the species of trees. Sequence gives number of those multigraphs with n loops and edges.

%D G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004.

%H G. Paquin, <a href="/A038205/a038205.pdf">Dénombrement de multigraphes enrichis</a>, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004. [Cached copy, with permission]

%K nonn

%O 0,2

%A _N. J. A. Sloane_, Oct 26 2004

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Last modified January 25 12:30 EST 2022. Contains 350572 sequences. (Running on oeis4.)