Search: id:A027698
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%I A027698
%S A027698 1,4,5,6,8,11,12,13,15,17,18,19,21,22,25,27,28,29,31,32,33,36,37,39,40,
%T A027698 41,42,43,44,46,47,48,49,50,51,52,53,54,58,61,63,65,67,73,75,78,80,81,
%U A027698 82,83,84,85,86,88,90,93,94,95,98,100,102,103,104,106,107,110,111,112
%N A027698 n-th prime has odd number of 1's in binary expansion.
%t A027698 Select[ Range[ 150 ], OddQ[ Length[ Cases[ IntegerDigits[ Prime[ # ], 
               2 ], 1 ] ] ]& ]
%Y A027698 Sequence in context: A037354 A035065 A035067 this_sequence A047313 A030343 
               A030590
%Y A027698 Adjacent sequences: A027695 A027696 A027697 this_sequence A027699 A027700 
               A027701
%K A027698 nonn,easy
%O A027698 0,2
%A A027698 N. J. A. Sloane (njas(AT)research.att.com).
%E A027698 More terms from Erich Friedman (erich.friedman(AT)stetson.edu).

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