Search: id:A083894
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%I A083894
%S A083894 0,0,0,0,0,0,1,0,0,0,0,0,0,1,0,0,1,0,0,0,1,0,0,0,0,0,1,1,0,0,0,0,0,1,1,
%T A083894 0,1,0,0,0,0,1,0,0,0,0,1,0,1,0,1,0,0,1,0,1,1,0,0,0,0,0,1,0,0,0,1,1,0,2,
%U A083894 1,1,1,2,1,1,2,0,0,0,1,0,0,1,1,0,0,0,0,0,1,0,0,1,0,0,0,1,0,0,0,1,0,0,1
%N A083894 Number of divisors of n with largest digit = 7 (base 10).
%C A083894 a(n) = A000005(n) - A083888(n) - A083889(n) - A083890(n) - A083891(n) 
               - A083892(n) - A083893(n) - A083895(n) - A083896(n) = A083902(n) 
               - A083901(n).
%e A083894 n=119, 2 of the 4 divisors of 119 have largest digit =7: {7,17}, therefore 
               a(119)=2.
%Y A083894 Cf. A054055, A000005, A083902.
%Y A083894 Sequence in context: A143654 A161096 A165983 this_sequence A128257 A106035 
               A105141
%Y A083894 Adjacent sequences: A083891 A083892 A083893 this_sequence A083895 A083896 
               A083897
%K A083894 nonn,base
%O A083894 1,70
%A A083894 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 08 2003

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