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A060066
Number of tame meanders with 2n crossings.
9
1, 3, 15, 93, 657, 5063, 41535, 357205, 3187599, 29303687, 276062807, 2654603987
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..12.
R. Bacher, Meander algebras, Institut Fourier, UMR 5582, Laboratoire de Mathématiques, 1999.
CROSSREFS
Meander sequences in Bacher's paper: A005315, A060066, A060089, A060111, A060148, A060149, A060174, A060198, A060206.
Sequence in context: A074539 A103210 A203014 * A206177 A366638 A272230
Adjacent sequences: A060063 A060064 A060065 * A060067 A060068 A060069
KEYWORD
nonn,nice,more
AUTHOR
N. J. A. Sloane, Apr 10 2001
EXTENSIONS
More terms from Larry Reeves (larryr(AT)acm.org), Apr 26 2001
STATUS
approved

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Last modified September 30 16:55 EDT 2024. Contains 376364 sequences.
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