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A005196
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Number of random forests.
(Formerly M2567)
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2
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1, 3, 6, 13, 24, 49, 93, 190, 381, 803, 1703, 3755, 8401, 19338, 45275, 108229, 262604, 647083, 1613941, 4072198, 10374138, 26663390, 69056163, 180098668, 472604314, 1247159936, 3307845730, 8814122981, 23585720703, 63359160443, 170815541708
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| E. M. Palmer and A. J. Schwenk, On the number of trees in a random forest, J. Combin. Theory, B 27 (1979), 109-121.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| Eric Weisstein's World of Mathematics, Forest
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CROSSREFS
| Sequence in context: A000219 A191782 A027999 * A032287 A199403 A006017
Adjacent sequences: A005193 A005194 A005195 * A005197 A005198 A005199
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KEYWORD
| nonn,nice
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 03 2004
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