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%I #4 Apr 21 2016 14:08:56
%S 73,233,281,409,449,569,953,1129,1193,1409,1481,2473,2801,3041,3209,
%T 3329,3761,3833,3881,4049,4153,5113,5441,6673,7193,9601,9689,10433,
%U 10889,11161,11321,11369,11593,11953,12041,12113,12329,12713,12721
%N Primes p such that p1=Floor[p/2]+p is prime and p2=Floor[p1/2]+p1 is prime.
%t lst={};Do[p=Prime[n];If[PrimeQ[p=Floor[p/2]+p],If[PrimeQ[p=Floor[p/2]+p],AppendTo[lst,Prime[n]]]],{n,7!}];lst
%t prQ[n_]:=Module[{p1=Floor[n/2]+n},AllTrue[{p1,Floor[p1/2]+p1},PrimeQ]]; Select[Prime[Range[1600]],prQ] (* The program uses the AllTrue function from Mathematica version 10 *) (* _Harvey P. Dale_, Apr 21 2016 *)
%Y Cf. A158708, A158709, A158710
%K nonn
%O 1,1
%A _Vladimir Joseph Stephan Orlovsky_, Mar 24 2009
%E Definition corrected by _Harvey P. Dale_, Apr 21 2016
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