A280769 Coefficients of g.f. for the class of multiply-rooted B-trees.

1, 2, 6, 33, 211, 1566, 12174, 98771

Offset

1,2

Links

Table of n, a(n) for n=1..8.

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

Crossrefs

Sequence in context: A243324 A018952 A019028 * A127114 A138909 A138983

Adjacent sequences: A280766 A280767 A280768 * A280770 A280771 A280772

Keyword

nonn,more

Author

N. J. A. Sloane, Jan 17 2017

Status

approved