Search: id:A083888
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%I A083888
%S A083888 1,1,1,1,1,1,1,1,1,2,2,1,1,1,1,1,1,1,1,2,1,2,1,1,1,1,1,1,1,2,1,1,2,1,1,
%T A083888 1,1,1,1,2,1,1,1,2,1,1,1,1,1,2,1,1,1,1,2,1,1,1,1,2,1,1,1,1,1,2,1,1,1,2,
%U A083888 1,1,1,1,1,1,2,1,1,2,1,1,1,1,1,1,1,2,1,2,1,1,1,1,1,1,1,1,2,3,2,1,1,1,1
%N A083888 Number of divisors of n with largest digit = 1 (base 10).
%C A083888 a(n) = A000005(n) - A083889(n) - A083890(n) - A083891(n) - A083892(n) 
               - A083893(n) - A083894(n) - A083895(n) - A083896(n).
%e A083888 n=110, 4 of the divisors of 110 {1,2,5,10,11,22,55,110} have
%e A083888 largest digit =1: {1,10,11,110}, therefore a(110)=4.
%Y A083888 Cf. A054055, A000005.
%Y A083888 Sequence in context: A030407 A098357 A165735 this_sequence A102681 A156839 
               A025453
%Y A083888 Adjacent sequences: A083885 A083886 A083887 this_sequence A083889 A083890 
               A083891
%K A083888 nonn,base
%O A083888 1,10
%A A083888 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 08 2003

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