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Primitive elements of A180054.
1

%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