%I #6 Feb 20 2017 00:25:35
%S 3,5,7,11,17,31,23,1093,43,73,29,127,89,47
%N Square root of the smallest square referenced in A237043 (Numbers n such that 2^n - 1 is not squarefree, but 2^d - 1 is squarefree for every proper divisor d of n.).
%e A273043(1)=6, 2^6-1=63, 63=3*3*7, 63 is not squarefree and the square is 3*3=9, the square root being 3.
%Y Cf. A237043 , A282631.
%K nonn
%O 1,1
%A _Robert Price_, Feb 19 2017
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