Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A085163/A085164.

A090828

Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A085163/A085164.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =7a(5) =14a(6) =37a(7) =95a(8) =285a(9) =876a(10) =2862a(11) =9582a(12) =33022a(13) =115454a(14) =409721a(15) =1467781a(16) =5305211a(17) =19302774a(18) =70662612a(19) =259980148a(20) =960908596

External references