A081156 Number of odd cycles in range [A014137(2n)..A014138(2n)] of permutation A057505/A057506, with fixed-points of both A057163 and A057164.

1, 1, 2, 3, 6, 12, 20, 59, 120

Offset: 0

Author

Wouter Meeussen & Antti Karttunen Mar 10 2003

Keywords

• nonn
• more

Comments

See comment at A080973.

Crossrefs

Cf. A080973.

Cf. A081155, A000108, A081163.

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

Formula

a(n) = A081155(2n+1) = A000108(n) - 2*A081163(n).