%I A028882
%S A028882 3,6,12,18,24,36,48,54,60,66,90,96,108,132,138,156,162,174,186,192,
%T A028882 204,216,222,228,240,246,270,306,318,330,360,366,384,390,408,438,
%U A028882 450,468,474,480,492,498,522,570,576,582,606,612,618,624,636,642
%N A028882 Numbers n such that n^2 - 7 is prime.
%H A028882 P. De Geest, <a href="http://www.worldofnumbers.com/consemor.htm">Palindromic 
               Quasipronics of the form n(n+x)</a>
%t A028882 f[n_]:=PrimeQ[n^2-7]; lst={}; Do[If[f[n],AppendTo[lst,n]],{n,3,7!,1}]; 
               lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Aug 12 2009]
%Y A028882 Sequence in context: A079830 A160744 A160738 this_sequence A154907 A024513 
               A116958
%Y A028882 Adjacent sequences: A028879 A028880 A028881 this_sequence A028883 A028884 
               A028885
%K A028882 nonn
%O A028882 1,1
%A A028882 Patrick De Geest (pdg(AT)worldofnumbers.com)