Number of even cycles in range [A014137(2n-1)..A014138(2n-1)] of permutation A057505/A057506.
A081151
Number of even cycles in range [A014137(2n-1)..A014138(2n-1)] of permutation A057505/A057506.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =18a(4) =95a(5) =528a(6) =2936a(7) =16212a(8) =90717a(9) =516358a(10) =2979992
External references
- oeis: A081151