Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506.

A057507

Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =10a(6) =18a(7) =46a(8) =95a(9) =236a(10) =528a(11) =1288a(12) =2936a(13) =6984a(14) =16212a(15) =38528a(16) =90717a(17) =216648a(18) =516358a(19) =1240818a(20) =2979992

External references