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Search: id:A006661
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| A006661 |
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Number of meanders in which first bridge is 5.
(Formerly M2286)
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+0
1
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| 3, 3, 7, 11, 28, 57, 155, 353, 1003, 2458, 7214, 18575, 55880, 149183
(list; graph; listen)
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OFFSET
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3,1
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
S. K. Lando and A. K. Zvonkin "Plane and projective meanders", S\'{e}ries Formelles et Combinatoire Alg\'{e}brique. Laboratoire Bordelais de Recherche Informatique, Universit\'{e} Bordeaux I, 1991, pp. 287-303.
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CROSSREFS
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Sequence in context: A082550 A036056 A161815 this_sequence A068626 A126698 A088859
Adjacent sequences: A006658 A006659 A006660 this_sequence A006662 A006663 A006664
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KEYWORD
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nonn
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AUTHOR
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Simon Plouffe (simon.plouffe(AT)gmail.com)
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