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A241784
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Number of simple connected graphs on n nodes with no cycle of length 5.
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2
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1, 1, 2, 6, 13, 44, 144, 577, 2457, 12499, 72394, 508942, 4408389, 49858593, 769196039, 16729819397
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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COMMENTS
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Inverse EULER transformation of A345216 (not necessarily connected)
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LINKS
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F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 29e68fa.
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CROSSREFS
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Cf. Squarefree (C_4) graphs A077269.
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KEYWORD
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nonn,hard,more
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AUTHOR
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EXTENSIONS
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a(11)-a(14) added using tinygraph by Falk Hüffner, Sep 22 2020
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STATUS
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approved
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