%I #3 Mar 30 2012 17:26:24
%S 11,23,27,43,47,55,59,87,91,95,107,111,119,123,171,173,175,179,183,
%T 187,191,203,215,219,223,235,239,247,251,299,343,345,347,349,351,355,
%U 359,363,365,367,371,375,379,383,395,407,411,427,429,431,435
%N Primitive elements of A180054.
%K nonn
%O 1,1
%A _Zak Seidov_, Aug 08 2010