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%I #6 Aug 08 2013 09:53:01
%S 2,1,2,3,4,7,6,7,8,11,10,13,12,15,16,15,16,19,18,21,22,23,22,25,24,27,
%T 26,29,28,29,30,31,34,35,36,37,36,39,40,41,40,41,42,45,46,47,46,49,48,
%U 51,52,53,52,55,56,57,58,59,58,59,60,63,64,63,66,65,66,69,70,69,70,73
%N n + mu(rad(n)), where mu is the Moebius-function (A008683) and rad is the squarefree kernel (A007947).
%C a(n)=n+A076479(n)=n+A008683(A007947(n)).
%o (PARI) a(n)=n+(-1)^omega(n) \\ _Charles R Greathouse IV_, Aug 08 2013
%K nonn
%O 1,1
%A _Reinhard Zumkeller_, Oct 14 2002
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