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A244427
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Number of unlabeled, connected graphs on n vertices with no subgraph isomorphic to a bull-graph.
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13
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1, 1, 2, 6, 9, 26, 80, 340, 1690, 11432, 101142, 1228608, 20329150
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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LINKS
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F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 6c1dbe4
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CROSSREFS
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Cf. A079575 (no induced bull subgraph).
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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a(11)-a(13) added using tinygraph by Falk Hüffner, Jul 01 2018
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STATUS
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approved
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