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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
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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:
A103210
A379087
A203014
*
A206177
A366638
A390887
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
