Search: id:A053577
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%I A053577
%S A053577 2,3,4,5,6,7,8,11,12,13,14,16,17,19,23,24,28,29,31,32,37,41,43,47,48,
%T A053577 53,56,59,61,62,64,67,71,73,79,83,89,96,97,101,103,107,109,112,113,124,
%U A053577 127,128,131,137,139,149,151,157,163,167,173,179,181,191,192,193,197
%N A053577 Cototient function ( n-EulerPhi[n] ) is a power of 2.
%F A053577 A051953[n]=2^w
%e A053577 For p prime cototient[p]=1; for x in the set {49152,57344,63488,65024,
               65528,65536}, x-Phi[x]=2^15=32768.
%Y A053577 Cf. A051953, A053578.
%Y A053577 Sequence in context: A032880 A032847 A023778 this_sequence A093515 A084369 
               A167211
%Y A053577 Adjacent sequences: A053574 A053575 A053576 this_sequence A053578 A053579 
               A053580
%K A053577 nonn
%O A053577 1,1
%A A053577 Labos E. (labos(AT)ana.sote.hu), Jan 18 2000

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