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Search: id:A066351
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| 1, 2, 5, 14, 43, 140, 472, 1628, 5719, 20388, 73562, 268066, 984911, 3643570, 13557020, 50691978, 190353370, 717457656, 2713061899, 10289600164, 39127877886, 149147692734, 569767908076, 2180978471298, 8363866011929
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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R. Kemp, Balanced ordered trees, Random Structures and Algorithms, 5, 1994, 99-121.
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CROSSREFS
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Sequence in context: A071755 A149879 A149880 this_sequence A029889 A123020 A005317
Adjacent sequences: A066348 A066349 A066350 this_sequence A066352 A066353 A066354
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Dec 19 2001
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 10 2004
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