Search: id:A000394
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%I A000394
%S A000394 0,1,2,4,5,7,8,9,10,11,12,13,15,16,17,18,20,23,24,25,26,27,
%T A000394 28,29,30,32,33,34,36,37,38,39,40,41,43,44,45,46,47,48,49,
%U A000394 50,52,53,54,56,57,58,59,60,61,62,63,64,65,67,68,69,71,72
%N A000394 Numbers of form x^2 + y^2 + 7z^2.
%Y A000394 Complement of A097633.
%Y A000394 Sequence in context: A023962 A094562 A039241 this_sequence A039184 A039137 
               A071807
%Y A000394 Adjacent sequences: A000391 A000392 A000393 this_sequence A000395 A000396 
               A000397
%K A000394 nonn
%O A000394 0,3
%A A000394 N. J. A. Sloane (njas(AT)research.att.com).

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