Search: id:A109010
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%I A109010
%S A109010 7,1,1,1,1,1,1,7,1,1,1,1,1,1,7,1,1,1,1,1,1,7,1,1,1,1,1,1,7,1,1,1,1,1,1,
%T A109010 7,1,1,1,1,1,1,7,1,1,1,1,1,1,7,1,1,1,1,1,1,7,1,1,1,1,1,1,7,1,1,1,1,1,1,
%U A109010 7,1,1,1,1,1,1,7,1,1,1,1,1,1,7,1,1,1,1,1,1,7,1,1,1,1,1,1,7,1,1
%N A109010 GCD(n,7).
%F A109010 a(n) = 1 + 6*[7|n], where [x|y] = 1 when x divides y, 0 otherwise.
%F A109010 a(n) = a(n-7).
%F A109010 Multiplicative with a(p^e, 7) = GCD(p^e, 7). David W. Wilson (davidwwilson(AT)comcast.net) 
               Jun 12, 2005.
%Y A109010 Cf. A109004.
%Y A109010 Sequence in context: A055061 A074465 A081229 this_sequence A117825 A010143 
               A101027
%Y A109010 Adjacent sequences: A109007 A109008 A109009 this_sequence A109011 A109012 
               A109013
%K A109010 nonn,easy,mult
%O A109010 0,1
%A A109010 Mitch Harris (Harris.Mitchell(AT)mgh.harvard.edu)

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