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A088909 Numbers expressible as the sum of squares of two distinct primes. 3
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..51.

EXAMPLE

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

MATHEMATICA

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

CROSSREFS

Cf. A001481, A088908.

Sequence in context: A087593 A158075 A087594 * A096451 A090690 A160026

Adjacent sequences:  A088906 A088907 A088908 * A088910 A088911 A088912

KEYWORD

nonn

AUTHOR

Hugo Pfoertner, Oct 22 2003

STATUS

approved

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Last modified March 30 04:49 EDT 2017. Contains 284296 sequences.