Search: id:A119973
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%I A119973
%S A119973 21,33,42,57,66,69,77,84,93,105,114,129,132,133,138,141,154,161,165,168,
%T A119973 177,186,189,201,209,210,213,217,228,237,249,253,258,264,266,273,276,
%U A119973 282,285,297,301,308,309,321,322,329,330,336,341,345,354,357,372
%N A119973 Numbers of the form (4k+1)*2^j which are not a sum of two squares.
%e A119973 42 is there because it's (4*5+1)*2^1 and is not a sum of two squares.
%Y A119973 Cf. A001481, A084109, A091072, A120772.
%Y A119973 Sequence in context: A035137 A075110 A036382 this_sequence A141249 A026068 
               A070006
%Y A119973 Adjacent sequences: A119970 A119971 A119972 this_sequence A119974 A119975 
               A119976
%K A119973 easy,nonn
%O A119973 1,1
%A A119973 Alford Arnold (Alford1940(AT)aol.com), Jun 03 2006
%E A119973 More terms from Don Reble (djr(AT)nk.ca), Jul 24 2006

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