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A081161
Number of even cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506, with two fixed-points of A057164.
2
0, 1, 4, 16, 60, 225, 848, 3188, 12095
(list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
LINKS
Table of n, a(n) for n=0..8.
FORMULA
a(n) = A081160(2n+1).
CROSSREFS
Cf. A081160, A014137, A014138, A057505, A057506, A057164.
Sequence in context: A231896 A128650 A072335 * A032106 A269462 A047097
Adjacent sequences: A081158 A081159 A081160 * A081162 A081163 A081164
KEYWORD
nonn,more
AUTHOR
Wouter Meeussen and Antti Karttunen, Mar 10 2003
STATUS
approved

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Last modified November 7 15:49 EST 2024. Contains 377536 sequences.
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