Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A082339/A082340.

A089429

Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A082339/A082340.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =26a(6) =74a(7) =218a(8) =672a(9) =2134a(10) =6964a(11) =23206a(12) =78724a(13) =271014a(14) =944766a(15) =3328872a(16) =11838378a(17) =42441326a(18) =153236900a(19) =556746772a(20) =2034098988

External references