%I #7 Aug 16 2015 07:11:23
%S 5,3,3,7,7,3,3,5,3,3,5,7,3,5,3,11,7,7,7,5,3,5,3,5,3,5,5,11,3,3,17,3,3,
%T 3,7,5,3,5,3,7,21,19,5,3,3,3,3,5,7,3,7,7,11,3,5,3,15,5,3,3,3,5,17,15,
%U 3,3,15,5,7,3,7,11,5,3,5,3,5,3,21,11,23,7,5,15,5,3,13,3,3,5,13,3,7,7,5,3,3
%N Least primitive root mod 2*prime(n)^2.
%H P. D. T. A. Elliott and L. Murata, <a href="http://dx.doi.org/10.1112/S0025579300014273">The least primitive root mod 2*p^2</a>, Mathematika, 45 (1998), 371-379.
%p with(numtheory): A084538 := n-> primroot(2*ithprime(n)^2);
%K nonn
%O 2,1
%A _N. J. A. Sloane_, Jun 30 2003