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A280764
Number of connected (6,2)-chordal bipartite graphs on n nodes.
1
1, 1, 1, 3, 5, 15, 37, 119, 365, 1258, 4346, 15773, 58058, 219016, 837482, 3250770, 12758359, 50602829
OFFSET
1,4
COMMENTS
Bipartite (6,2)-chordal graphs are exactly the bipartite distance-hereditary graphs (see D'Atri and Moscarini). - Falk Hüffner, Jul 25 2019
LINKS
A. D'Atri and M. Moscarini, Distance-hereditary graphs, Steiner trees, and connected domination, SIAM J. Comput. 17(3) (1988), 521-538.
F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 9766535.
CROSSREFS
Cf. A280765 (not necessarily connected).
Sequence in context: A265762 A018516 A138017 * A148503 A236571 A145939
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jan 17 2017
EXTENSIONS
a(11)-a(18) added using tinygraph by Falk Hüffner, Jul 25 2019
STATUS
approved