Search: id:A153975
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%I A153975
%S A153975 0,4,8,10,14,64,92,112,140,146,172,218,298,304,322,326,340,350,356,416,
%T A153975 440,470,508,554,560,580,626,634,652,668,686,694,704,728,736,746,770,
%U A153975 806,818,868,892,920,1054,1082,1102,1130,1156,1196,1256,1264,1378,1418
%N A153975 Values of n such that n^2-3 and n^2+3 are both prime.
%C A153975 4^2-3=13,4^2+3=19 primes,...
%t A153975 a[n_]:=n^x-y;b[n_]:=n^x+y;lst={};x=2;y=3;Do[If[PrimeQ[a[n]]&&PrimeQ[b[n]],
               AppendTo[lst,n]],{n,0,7!}];lst
%Y A153975 Cf. A028870, A028873, A038599, A153974, A108701
%Y A153975 Sequence in context: A063087 A120064 A028873 this_sequence A020169 A082934 
               A144570
%Y A153975 Adjacent sequences: A153972 A153973 A153974 this_sequence A153976 A153977 
               A153978
%K A153975 nonn
%O A153975 1,2
%A A153975 Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 03 2009

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