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%I #9 Mar 03 2013 08:53:34
%S 1,29262,114630,160986,179562,252978,502878,528954,780258,908070,
%T 1080906,1826454,2460786,2870142,3934686,5086722,5493030,6001206,
%U 6183078,6621270,6668634,8808234,9298110,9752190,10479282,11707518,12263334,12928254,13513278
%N Squarefree n such that sigma(phi(n)) = phi(sigma(n)).
%H Donovan Johnson, <a href="/A058652/b058652.txt">Table of n, a(n) for n = 1..500</a>
%t Select[ Range[ 10^7 ], DivisorSigma[ 1, EulerPhi[ # ] ] == EulerPhi[ DivisorSigma[ 1, # ] ] && Union[ Transpose[ FactorInteger[ # ] ] [ [ 2 ] ] ] == {1} & ]
%Y Cf. A033632.
%K nonn
%O 1,2
%A _Robert G. Wilson v_, Dec 26 2000
%E Prepended missing a(1)=1, _Donovan Johnson_, Mar 03 2012.