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A081159 Number of even cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506, with no fixed points of either A057163 or A057164. 2
0, 0, 2, 20, 148, 986, 5918, 34708, 202664 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

CROSSREFS

a(n) = A081157(2n+1).

Sequence in context: A198052 A203216 A198647 * A105489 A093302 A093130

Adjacent sequences:  A081156 A081157 A081158 * A081160 A081161 A081162

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 February 13 16:05 EST 2012. Contains 205522 sequences.