613576119

Appears in sequences

• Condensed 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=24A064086
• Numbers of the form (2^(i*j)-1)/((2^i-1)*(2^j-1)) where gcd(i,j) = 1.at n=31A112674
• a(n)= (4^(2^n) + 2^(2^n) + 1)/7.at n=4A198411