A081157 Number of even 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, 8, 20, 60, 148, 402, 986, 2474, 5918, 14496, 34708, 84282, 202664, 492048

Offset: 0

Author

Wouter Meeussen and Antti Karttunen, Mar 10 2003

Keywords

• nonn
• more

Crossrefs

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

Bisections: A081158, A081159. Cf. A081150, A081160, A081162.