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A005772
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Number of permutations of length n with 2 cycle lengths.
(Formerly M2978)
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4
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3, 14, 95, 424, 3269, 21202, 178443, 1622798, 17064179, 177093256, 2293658861, 29296367476, 416567286225, 6250052633294, 103272943796399, 1717954871163982, 32068960264609523, 601640759502181648
(list; graph; refs; listen; history; internal format)
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OFFSET
| 3,1
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REFERENCES
| N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
H. S. Wilf, Three problems in combinatorial asymptotics, J. Combin. Theory, A 35 (1983), 199-207.
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CROSSREFS
| Sequence in context: A074531 A091906 A094369 * A053984 A113181 A136461
Adjacent sequences: A005769 A005770 A005771 * A005773 A005774 A005775
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KEYWORD
| nonn
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AUTHOR
| Simon Plouffe (simon.plouffe(AT)gmail.com)
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EXTENSIONS
| More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Nov 02 2003
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