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A081155 Number of odd cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506, with fixed-points of both A057163 and A057164. 3
1, 1, 0, 1, 0, 2, 0, 3, 0, 6, 0, 12, 0, 20, 0, 59, 0, 120, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

COMMENTS

See comment at A080973. Because A057163 can fix only binary trees of odd size, the even-indexed terms are all 0 after n>0.

LINKS

Table of n, a(n) for n=0..18.

CROSSREFS

a(n) = A081148(n)-A081153(n). Bisection: A081156.

Sequence in context: A090482 A082857 A208092 * A130628 A249431 A331176

Adjacent sequences:  A081152 A081153 A081154 * A081156 A081157 A081158

KEYWORD

nonn

AUTHOR

Wouter Meeussen and Antti Karttunen Mar 10 2003

STATUS

approved

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Last modified April 7 10:56 EDT 2020. Contains 333301 sequences. (Running on oeis4.)