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(n-th 4k+1 prime plus n-th 4k+3 prime)/4.
0

%I #3 Mar 30 2012 18:55:50

%S 2,5,7,12,15,18,24,27,33,39,42,45,48,54,61,69,72,78,83,89,91,102,106,

%T 110,117,123,126,130,136,144,147,155,164,166,176,184,189,192,197,201,

%U 213,220,224,226,243,247,255,261,265,269,274,281,290,295

%N (n-th 4k+1 prime plus n-th 4k+3 prime)/4.

%K nonn

%O 1,1

%A _Clark Kimberling_