Search: id:A072777
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%I A072777
%S A072777 4,8,9,16,25,27,32,36,49,64,81,100,121,125,128,169,196,216,225,243,256,
%T A072777 289,343,361,441,484,512,529,625,676,729,841,900,961,1000,1024,1089,
%U A072777 1156,1225,1296,1331,1369,1444,1521,1681,1764,1849
%N A072777 Powers of square-free numbers which are not square-free.
%C A072777 For all n exists k: a(n)=A072774(k) and A072776(k)>1.
%Y A072777 Cf. A013929.
%Y A072777 Sequence in context: A001694 A157985 A001597 this_sequence A076292 A090516 
               A090515
%Y A072777 Adjacent sequences: A072774 A072775 A072776 this_sequence A072778 A072779 
               A072780
%K A072777 nonn,nice
%O A072777 1,1
%A A072777 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 10 2002

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