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%I #3 Mar 31 2012 10:28:53
%S 4,6,10,12,18,24,30,36,42,54,60,78,84,90,120,150,168,180,210,240,270,
%T 300,330,390,420,510,546,570,630,780,840,990,1050,1170,1260,1320,1470,
%U 1650,1680,1890,2100,2310,2730,3150,3360,3570,3990,4290,4620,4830
%N Integers n such that Phi(2, a(n)) = A144741(a(n)) > Phi(2, k) for 0 < k < a(n).
%C Subset of A065385.
%C The first three terms are semiprimes and the number of factors gradually increases. All except four and ten are multiples of six.
%Y Cf. A051953, A065385, A144741, A144742
%K easy,nonn
%O 1,1
%A _Reikku Kulon_, Sep 20 2008