Search: id:A081334
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%I A081334
%S A081334 3,3,3,3,1,3,3,3,3,1,3,3,1,3,1,3,1,3,3,1,3,3,3,3,3,1,3,3,1,1,3,3,3,1,1,
%T A081334 3,1,3,1,1,1,3,3,3,1,3,3,3,3,3,1,1,1,3,1,3,3,1,3,1,1,3,3,3,3,3,3,1,3,1,
%U A081334 3,3,1,1,3,3,3,1,3,1,3,1,3,3,3,3,1,3,1,1,1,3,3,3,1,3,1,3,3,3,1,1,3,1,1
%N A081334 sigma(2*n^2) modulo 4.
%Y A081334 See also A065765.
%Y A081334 Sequence in context: A132973 A107760 A138070 this_sequence A106694 A031355 
               A097675
%Y A081334 Adjacent sequences: A081331 A081332 A081333 this_sequence A081335 A081336 
               A081337
%K A081334 nonn
%O A081334 1,1
%A A081334 Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 20 2003

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