A081153 Number of odd cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506, with no fixed points of either A057163 or A057164.

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

Offset: 0

Author

Wouter Meeussen and Antti Karttunen Mar 10 2003

Keywords

• nonn
• more

Crossrefs

Bisection: A081154.

Cf. A081148, A081155.

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

Formula

a(n) = A081148(n)-A081155(n).