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Search: id:A005331
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| A005331 |
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Certain subgraphs of a directed graph (binomial transform of A005321).
(Formerly M1531)
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+0
1
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| 1, 2, 5, 20, 179, 4082, 218225, 25316720, 6135834479, 3047003143022, 3067545380897645, 6223557209578656620, 25360384878802358268779
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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Andresen, E.; Kjeldsen, K.; On certain subgraphs of a complete transitively directed graph. Discrete Math. 14 (1976), number 2, 103-119.
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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N. J. A. Sloane, Transforms
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CROSSREFS
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Sequence in context: A159320 A156871 A058109 this_sequence A158872 A006893 A003163
Adjacent sequences: A005328 A005329 A005330 this_sequence A005332 A005333 A005334
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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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