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Search: id:A005977
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| A005977 |
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Reduced interval graphs with n nodes.
(Formerly M1787)
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+0
1
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| 0, 0, 0, 0, 1, 2, 7, 31, 168, 1025, 7013, 52495, 425213, 3696032, 34291937, 338161526, 3532185118, 38963334652, 452704892533, 5526901638291, 70746674291507
(list; graph; listen)
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OFFSET
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1,6
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REFERENCES
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Hanlon, Phil; Counting interval graphs. Trans. Amer. Math. Soc. 272 (1982), no. 2, 383-426.
P. J. Hanlon, personal communication.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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CROSSREFS
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Sequence in context: A007446 A002872 A105216 this_sequence A059037 A046907 A091312
Adjacent sequences: A005974 A005975 A005976 this_sequence A005978 A005979 A005980
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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