Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #12 May 21 2018 03:15:28
%S 1,1,4,16,70,322,1556,39698,207217
%N Coefficients of g.f. for the class of 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 1,3
%A _N. J. A. Sloane_, Jan 17 2017