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A005978
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Number of dependable interval graphs with n nodes.
(Formerly M3554)
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0
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0, 0, 0, 0, 1, 4, 19, 93, 539, 3474, 24856, 192972, 1613219, 14410374, 136920388, 1378542639, 14663082556, 164340455701, 1936286904952, 23932267735948, 309701296575063
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,6
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REFERENCES
| 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
| Sequence in context: A121179 A131552 A122369 * A083065 A137636 A027618
Adjacent sequences: A005975 A005976 A005977 * A005979 A005980 A005981
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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