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A280765
Number of (6,2)-chordal bipartite graphs on n nodes.
1
1, 2, 3, 7, 13, 33, 79, 229, 671, 2179, 7283, 25632, 92427, 342676, 1293482, 4966625, 19322745, 76069927
OFFSET
1,2
COMMENTS
Equivalently, number of bipartite distance-hereditary graphs (see D'Atri and Moscarini). - Falk Hüffner, Jun 30 2018
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 3e9b2ba.
CROSSREFS
Cf. A280764.
Sequence in context: A259145 A237255 A129859 * A056953 A371867 A321681
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jan 17 2017
EXTENSIONS
a(10)-a(18) added using tinygraph by Falk Hüffner, Jun 30 2018
STATUS
approved