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%I #26 Aug 29 2021 19:18:09
%S 1,9,15,21,25,27,33,35,39,45,49,51,55,57,63,65,69,75,77,81,85,87,91,
%T 93,95,99,111,115,117,119,121,123,125,129,133,135,141,143,145,147,153,
%U 155,159,161,169,171,175,177,183,185,187,189,201,203,205,207,209,213,215
%N Nonprime n such that phi(n) > n/2.
%C Sequence is similar to A014076(n) giving odd nonprimes. Only 3 terms = 105, 165, 195 are not in the sequence among 59 terms < 210.
%C Cototient[m] > totient[m] equivalent to 2phi[m] < m; the missing terms mentioned here seem to form A036798. - _Labos Elemer_, May 08 2003
%C The number 9075 is not in this sequence, is in A014076 and is not in A036798, which means that the missing terms mentioned here do not form A036798 (cf. A118700). - _R. J. Mathar_, Aug 08 2007
%t Select[Range[250],!PrimeQ[#]&&EulerPhi[#]>#/2&] (* _Harvey P. Dale_, Aug 29 2021 *)
%Y Cf. A036798, A083254.
%K nonn
%O 1,2
%A _Benoit Cloitre_, Feb 07 2002