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A280767
Coefficients of g.f. for the class of C-trees.
0
1, 1, 4, 16, 70, 322, 1556, 39698, 207217
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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
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Last modified August 30 11:14 EDT 2024. Contains 375543 sequences. (Running on oeis4.)