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%I #10 May 21 2018 03:15:35
%S 1,2,6,23,97,446,2140,10662,54482
%N Coefficients of g.f. for the class of multiply-rooted C-trees.
%H Jessica Shi, <a href="https://pdfs.semanticscholar.org/c264/67cd4a5f0adee094d7c19fd8a08a78b46793.pdf">Enumeration of unlabeled graph classes: A study of tree decompositions and related approaches</a>, 2015.
%K nonn,more
%O 1,2
%A _N. J. A. Sloane_, Jan 17 2017