%N Nonprime odious numbers.
%C Intersection of A018252 and A000069.
%C Also 1 together with A125495.
%e 28 is in the sequence because it is nonprime and because 28 written in base 2 is 11100 which has an odd number of 1's.
%Y Cf. A000069, A018252, A125495.
%A _Omar E. Pol_, Oct 25 2013