a(n) = number of integers in range [2^(n-1),(2^n)-1] which permutation A209861/A209862 sends to odd-sized orbits.
A209867
a(n) = number of integers in range [2^(n-1),(2^n)-1] which permutation A209861/A209862 sends to odd-sized orbits.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =6a(5) =16a(6) =12a(7) =8a(8) =14a(9) =8a(10) =406a(11) =8a(12) =56a(13) =80a(14) =1686a(15) =8866a(16) =8272a(17) =15178a(18) =9462a(19) =938a(20) =41128
External references
- oeis: A209867