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A081150 Number of even cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506. +0
8
0, 0, 1, 1, 3, 6, 18, 37, 95, 212, 528, 1226, 2936, 6822, 16212, 38081, 90717, 215414, 516358 (list; graph; listen)
OFFSET

0,5

COMMENT

For the convenience of the range notation above, we define A014137(-1) and A014138(-1) as zero.

LINKS

Counted with the help of this C-program

CROSSREFS

a(n) = A081157(n)+A081160(n)+A081162(n) = A057507(n)-A081148(n). Bisections: A081151, A081152.

Sequence in context: A034457 A026532 A160505 this_sequence A007990 A121188 A120718

Adjacent sequences: A081147 A081148 A081149 this_sequence A081151 A081152 A081153

KEYWORD

nonn

AUTHOR

Wouter Meeussen (wouter.meeussen(AT)pandora.be) & Antti Karttunen (Firstname.Surname(AT)iki.fi) Mar 10 2003

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Last modified December 5 20:25 EST 2009. Contains 170428 sequences.


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