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A005197
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Random rooted forests.
(Formerly M2663)
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0
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1, 3, 7, 17, 39, 96, 232, 583, 1474, 3797, 9864, 25947, 68738, 183612, 493471, 1334143, 3624800, 9893860, 27113492, 74577187, 205806860, 569678759, 1581243203
(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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CROSSREFS
| Sequence in context: A157029 A191825 A077927 * A147142 A106472 A036885
Adjacent sequences: A005194 A005195 A005196 * A005198 A005199 A005200
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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