Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A073288/A073289.

A089405

Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A073288/A073289.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =20a(6) =47a(7) =112a(8) =279a(9) =712a(10) =1868a(11) =5020a(12) =13792a(13) =38630a(14) =110105a(15) =318756a(16) =935817a(17) =2782424a(18) =8368484a(19) =25434314a(20) =78047606

External references