Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A071665/A071666.
A089872
Number of cycles in range [A014137(n-1)..A014138(n-1)] of permutation A071665/A071666.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =16a(6) =40a(7) =93a(8) =226a(9) =540a(10) =1336a(11) =3284a(12) =8068a(13) =19664a(14) =47880a(15) =116407a(16) =282866a(17) =687666a(18) =1673920a(19) =4077020a(20) =9929636
External references
- oeis: A089872