%I A053574
%S A053574 0,0,1,1,2,1,1,2,1,2,1,2,2,1,3,3,4,1,1,3,2,1,1,3,2,2,1,2,2,3,1,4,2,4,3,
%T A053574 2,2,1,3,4,3,2,1,2,3,1,1,4,1,2,5,3,2,1,3,3,2,2,1,4,2,1,2,5,4,2,1,5,2,3,
%U A053574 1,3,3,2,3,2,2,3,1,5,1,3,1,3,6,1,3,3,3,3,3,2,2,1,3,5,5,1,2,3,2,5,1,4,4
%N A053574 Exponent of 2 in EulerPhi[n].
%e A053574 n=513=27*19 Phi[513]=4*81 so power of 2 is 2, thus a(513)=2
%Y A053574 Cf. A000010.
%Y A053574 Sequence in context: A103684 A105103 A086669 this_sequence A065203 A029396 
               A084746
%Y A053574 Adjacent sequences: A053571 A053572 A053573 this_sequence A053575 A053576 
               A053577
%K A053574 nonn
%O A053574 1,5
%A A053574 Labos E. (labos(AT)ana.sote.hu), Jan 18 2000