Search: id:A053443
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%I A053443
%S A053443 4,8,9,12,16,18,20,24,27,28,32,36,40,44,45,48,49,52,54,56,60,63,64,68,
%T A053443 72,76,80,81,84,88,90,92,96,98,99,100,104,108,112,116,117,120,121,124,
%U A053443 126,128,132,135,136,140,144,147,148,152,153,156,160,162,164,168,171
%N A053443 x^2 + y^2 does not take on all possible values mod n.
%C A053443 Sequence gives values of n such there is a solution 1<x<n to x^2+n^2=n 
               mod(n) - Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 04 2002
%F A053443 n divisible by p^2 where p = 2 or prime p == 3 (mod 4).
%Y A053443 A053444.
%Y A053443 Sequence in context: A013929 A162966 A034043 this_sequence A048098 A122145 
               A057109
%Y A053443 Adjacent sequences: A053440 A053441 A053442 this_sequence A053444 A053445 
               A053446
%K A053443 nonn
%O A053443 1,1
%A A053443 David W. Wilson (davidwwilson(AT)comcast.net)

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