Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A082351/A082352.

A089424

Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A082351/A082352.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =18a(6) =48a(7) =151a(8) =478a(9) =1580a(10) =5304a(11) =18220a(12) =63308a(13) =222936a(14) =792436a(15) =2841807a(16) =10265130a(17) =37322728a(18) =136468200a(19) =501523066a(20) =1851418668

External references