%I A083919
%S A083919 0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,
%T A083919 1,0,1,1,0,0,0,0,0,1,0,0,0,1,0,0,0,0,1,0,0,1,1,1,0,0,0,1,0,0,0,0,0,1,0,
%U A083919 0,1,0,0,0,1,0,1,1,0,1,0,0,0,0,0,1,0,1,1,0,0,0,0,1,0,0,1,2,0,0,0,0,0,0
%N A083919 Number of divisors of n that are congruent to 9 modulo 10.
%C A083919 a(n) = A000005(n) - A083910(n) - A083911(n) - A083912(n) - A083913(n) 
               - A083914(n) - A083915(n) - A083916(n) - A083917(n) - A083918(n).
%Y A083919 Cf. A010879, A000005, A001227.
%Y A083919 Sequence in context: A102448 A102683 A122840 this_sequence A063665 A072507 
               A130779
%Y A083919 Adjacent sequences: A083916 A083917 A083918 this_sequence A083920 A083921 
               A083922
%K A083919 nonn
%O A083919 1,99
%A A083919 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 08 2003