A081154 Number of odd cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506, with no fixed points of either A057163 or A057164.

0, 0, 2, 6, 18, 50, 142, 388, 1114

Offset

0,3

Links

Table of n, a(n) for n=0..8.

Formula

a(n) = A081153(2n+1).

Crossrefs

Cf. A081153, A014137, A014138, A057505, A057506, A057163, A057164.

Sequence in context: A372481 A361286 A180282 * A002900 A309087 A199770

Adjacent sequences: A081151 A081152 A081153 * A081155 A081156 A081157

Keyword

nonn,more

Author

Wouter Meeussen and Antti Karttunen, Mar 10 2003

Status

approved