A060066 Number of tame meanders with 2n crossings.

1, 3, 15, 93, 657, 5063, 41535, 357205, 3187599, 29303687, 276062807, 2654603987

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