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A005973
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Number of connected labeled interval graphs with n nodes.
(Formerly M3658)
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1
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1, 1, 4, 35, 541, 13062, 444767, 19912657, 1121041222, 77048430033, 6329916102841, 611728117464928, 68657066350744197, 8854866422322096893, 1300613343254300891316
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,3
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REFERENCES
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P. J. Hanlon, personal communication.
R. W. Robinson, Numerical implementation of graph counting algorithms, AGRC Grant, Math. Dept., Univ. Newcastle, Australia, 1980.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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CROSSREFS
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KEYWORD
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nonn,nice
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AUTHOR
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STATUS
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approved
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