Search: id:A079635
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%I A079635
%S A079635 0,0,1,0,1,1,1,0,2,1,1,1,1,1,0,0,1,2,1,1,2,1,1,1,2,1,3,1,1,0,1,0,2,1,0,
%T A079635 2,1,1,0,1,1,2,1,1,1,1,1,1,2,2,0,1,1,3,0,1,2,1,1,0,1,1,3,0,2,2,1,1,2,0,
%U A079635 1,2,1,1,1,1,2,0,1,1,4,1,1,2,2,1,0,1,1
%V A079635 0,0,-1,0,1,-1,-1,0,-2,1,-1,-1,1,-1,0,0,1,-2,-1,1,-2,-1,-1,-1,2,1,-3,-1,
               1,0,-1,0,-2,1,
%W A079635 0,-2,1,-1,0,1,1,-2,-1,-1,-1,-1,-1,-1,-2,2,0,1,1,-3,0,-1,-2,1,-1,0,1,-1,
               -3,0,2,-2,-1,1,
%X A079635 -2,0,-1,-2,1,1,1,-1,-2,0,-1,1,-4,1,-1,-2,2,-1,0,-1,1
%N A079635 Sum of (2 - p mod 4) for all prime factors p of n (with repetition).
%C A079635 a(n) = A046080(n) - A065339(n).
%e A079635 a(55) = a(5*11) = (2 - 5 mod 4)+(2 - 11 mod 4) = (2-1)+(2-3) = (1)+(-1) 
               = 0.
%Y A079635 Sequence in context: A056978 A037819 A090405 this_sequence A037909 A000164 
               A157746
%Y A079635 Adjacent sequences: A079632 A079633 A079634 this_sequence A079636 A079637 
               A079638
%K A079635 sign
%O A079635 1,9
%A A079635 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 30 2003

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