Search: id:A083889
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%I A083889
%S A083889 0,1,0,1,0,1,0,1,0,1,0,2,0,1,0,1,0,1,0,2,1,2,0,2,0,1,0,1,0,1,0,1,0,1,0,
%T A083889 2,0,1,0,2,0,2,0,2,0,1,0,2,0,1,0,1,0,1,0,1,0,1,0,3,0,1,1,1,0,2,0,1,0,1,
%U A083889 0,2,0,1,0,1,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0,1,0,1,0,2,0,1,0,2,0,2,0,1,1
%N A083889 Number of divisors of n with largest digit = 2 (base 10).
%C A083889 a(n) = A000005(n) - A083888(n) - A083890(n) - A083891(n) - A083892(n) 
               - A083893(n) - A083894(n) - A083895(n) - A083896(n) = A083897(n) 
               - A083888(n).
%e A083889 n=120, 4 of the 16 divisors of 120 have largest digit =2:
%e A083889 {2,12,20,120}, therefore a(120)=4.
%Y A083889 Cf. A054055, A000005, A083897.
%Y A083889 Sequence in context: A152140 A104975 A106404 this_sequence A127523 A116927 
               A137276
%Y A083889 Adjacent sequences: A083886 A083887 A083888 this_sequence A083890 A083891 
               A083892
%K A083889 nonn,base
%O A083889 1,12
%A A083889 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 08 2003

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