139090655domain: NAppears in sequencesQuotient of A000225 and A064084.at n=39A064085Condensed version of A064085: all terms of A064085 with values greater than 1 (which coincides with all terms of A064085 with nonprime power index).at n=19A064086Numbers of the form (2^(i*j)-1)/((2^i-1)*(2^j-1)) where gcd(i,j) = 1.at n=27A112674