%I A027866
%S A027866 2,3,4,9,12,13,18,19,21,23,24,32,34,38,48,51,52,56,62,63,81,82,87,
%T A027866 96,97,102,104,109,119,128,142,146,152,158,159,164,166,167,199,212,
%U A027866 214,217,219,221,223,224,229,233,236,238,249,251
%N A027866 Numbers n such that n^2 + (n+1)^2 + (n+2)^2 + (n+3)^2 + (n+4)^2 + (n+5)^2 
               is prime.
%H A027866 P. De Geest, <a href="http://www.worldofnumbers.com/index.html">World!Of 
               Numbers</a>
%t A027866 Select[ Range[ 6! ],PrimeQ[ #^2+(#+1)^2+(#+2)^2+(#+3)^2+(#+4)^2+(#+5)^2 
               ]& ] [ From Vladimir Orlovsky (4vladimir(AT)gmail.com), Dec 20 2009 
               ]
%Y A027866 Sequence in context: A125774 A062410 A145772 this_sequence A100902 A034793 
               A134313
%Y A027866 Adjacent sequences: A027863 A027864 A027865 this_sequence A027867 A027868 
               A027869
%K A027866 nonn,new
%O A027866 1,1
%A A027866 Patrick De Geest (pdg(AT)worldofnumbers.com)