Search: id:A033851
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%I A033851
%S A033851 35,175,245,875,1225,1715,4375,6125,8575,12005,21875,30625,42875,60025,
%T A033851 84035,109375,153125,214375,300125,420175,546875,588245,765625,1071875,
%U A033851 1500625,2100875,2734375,2941225,3828125,4117715,5359375,7503125
%N A033851 Numbers n whose prime factors are 5 and 7.
%C A033851 Contribution from Artur Jasinski (grafix(AT)csl.pl), Nov 09 2008: (Start)
%C A033851 Successive k such that EulerPhi[k]/k == 24/35.
%C A033851 a(n)=35*A003595(n) (End)
%t A033851 a = {}; Do[If[EulerPhi[x]/x == 24/35, AppendTo[a, x]], {x, 1, 10000}]; 
               a [From Artur Jasinski (grafix(AT)csl.pl), Nov 09 2008]
%Y A033851 A003595, A147571-A147575, A147576-A147580 [From Artur Jasinski (grafix(AT)csl.pl), 
               Nov 09 2008]
%Y A033851 Sequence in context: A045614 A154074 A015219 this_sequence A101954 A005937 
               A007329
%Y A033851 Adjacent sequences: A033848 A033849 A033850 this_sequence A033852 A033853 
               A033854
%K A033851 nonn
%O A033851 0,1
%A A033851 Jeff Burch (gburch(AT)erols.com)

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