%I A069879
%S A069879 0,2,4,8,10,14,18,22,28,36,42,50,56,62,70,80,88,96,104,112,122,134,144,
%T A069879 156,168,180,194,208,220,234,248,262,276,292,308,326,344,362,380,400,
%U A069879 418,438,456,474,494,514,532,550,570,590
%N A069879 Number of pairs {i,j} with i different from j; 1<=i<=n; 1<= j <=n such 
               that i+j is a prime number.
%Y A069879 Partial sums of 2*A060715(n).
%Y A069879 Sequence in context: A153974 A034822 A050567 this_sequence A074330 A024895 
               A087915
%Y A069879 Adjacent sequences: A069876 A069877 A069878 this_sequence A069880 A069881 
               A069882
%K A069879 nonn
%O A069879 1,2
%A A069879 Santi Spadaro (spados(AT)katamail.com), May 04 2002