Difference between the number of nonnegative evil and odious multiples of n less than 2^n.

Terms

a(0) =-1a(1) =-1a(2) =3a(3) =-1a(4) =5a(5) =9a(6) =-7a(7) =-1a(8) =27a(9) =25a(10) =11a(11) =162a(12) =13a(13) =49a(14) =521a(15) =-1a(16) =697a(17) =2196a(18) =19a(19) =625a(20) =8435a(21) =121a(22) =-23a(23) =59049a(24) =3120a(25) =169a(26) =177147a(27) =2401a(28) =29a(29) =982635