A088909 Numbers expressible as the sum of squares of two distinct primes.

13, 29, 34, 53, 58, 74, 125, 130, 146, 170, 173, 178, 194, 218, 290, 293, 298, 314, 338, 365, 370, 386, 410, 458, 482, 530, 533, 538, 554, 578, 650, 698, 818, 845, 850, 866, 890, 962, 965, 970, 986, 1010, 1082, 1130, 1202, 1250, 1322, 1370, 1373, 1378, 1394

Offset: 1

Author

Hugo Pfoertner, Oct 22 2003

Keywords

• nonn

Examples

			a(1)=3*3+2*2=13, a(2)=5*5+2*2=29.
		

Crossrefs

Cf. A001481, A088908.

Programs

Mathematica

Union[Total/@(Subsets[Prime[Range[20]],{2}]^2)] (* Harvey P. Dale, Nov 16 2013 *)