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%I #28 May 17 2017 03:17:11
%S 2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,
%T 27,28,29,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,
%U 51,52,53,54,55,56,57,58,59,61,62,63,64,65,67,68,69,70,71,72,73,74,75,76,77
%N Numbers n such that the number of distinct prime divisors of n divides phi(n).
%C Integers n where A001221(n) divides A000010(n).
%H G. C. Greubel, <a href="/A192218/b192218.txt">Table of n, a(n) for n = 1..5000</a>
%t Select[Range[2,100],Divisible[EulerPhi[#],PrimeNu[#]]&] (* _Harvey P. Dale_, May 06 2013 *)
%o (PARI) for(n=2,1e3,if(eulerphi(n)%omega(n)==0,print1(n", "))) \\ _Charles R Greathouse IV_, Aug 17 2011
%Y Cf. A000010, A001221, A175785.
%K nonn
%O 1,1
%A _Enrique Pérez Herrero_, Aug 06 2011
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