A280767 Coefficients of g.f. for the class of C-trees.

1, 1, 4, 16, 70, 322, 1556, 39698, 207217

Offset

1,3

Links

Table of n, a(n) for n=1..9.

Jessica Shi, Enumeration of unlabeled graph classes: A study of tree decompositions and related approaches, 2015.

Crossrefs

Sequence in context: A180145 A133789 A151244 * A091354 A326654 A246014

Adjacent sequences: A280764 A280765 A280766 * A280768 A280769 A280770

Keyword

nonn,more

Author

N. J. A. Sloane, Jan 17 2017

Status

approved