Search: id:A133477
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%I A133477
%S A133477 0,2,3,6,5,11,7,6,12,17,11,27,13,23,23,6,17,38,19,41,31,35,23,27,30,41,
%T A133477 12,55,29,71,31,6,47,53,47,90,37,59,55,41,41,95,43,83,77,71,47,27,56,92,
%U A133477 71,97,53,38,71,55,79,89,59,167,61,95,103,6,83,143,67,125,95,143,71,90
%N A133477 Sum of cube-free divisors of n excluding 1.
%H A133477 Matthew M. Conroy, <a href="http://www.madandmoonly.com/doctormatt/">
               Home Page</a>, listed in lieu of email address.
%F A133477 Equals A073185(n) - 1. - N. J. A. Sloane (njas(AT)research.att.com), 
               Nov 30 2007
%e A133477 a(8) = 6 because the divisors of 8 are {1,2,4,8}, the cube-free divisors 
               are 1, 2, 4 so we get a(8) = 2 + 4 = 6.
%Y A133477 Cf. A004709, A005117, A039653, A048250, A068318, A083681.
%Y A133477 Cf. A073184, A073185.
%Y A133477 Sequence in context: A073740 A077320 A019565 this_sequence A039653 A106379 
               A001634
%Y A133477 Adjacent sequences: A133474 A133475 A133476 this_sequence A133478 A133479 
               A133480
%K A133477 easy,nonn
%O A133477 1,2
%A A133477 Jonathan Vos Post (jvospost3(AT)gmail.com), Nov 29 2007
%E A133477 Edited by N. J. A. Sloane (njas(AT)research.att.com), Nov 30 2007
%E A133477 More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl) and Matthew 
               M. Conroy, Jan 08 2008

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