%N Primes p that have a primitive root between 0 and p that is not a primitive root of p^2.
%C The smallest primitive roots of p that is not a primitive root of p^2 are in A060504.
%C Except for the initial term 2, this is a subset of A134307. - _Jeppe Stig Nielsen_, Jul 31 2015
%e 14 is a primitive root of 29 but not of 29^2.
%o (PARI) forprime(p=2,,for(a=1,p-1,if(znorder(Mod(a,p))==p-1&Mod(a,p^2)^(p-1)==1,print1(p,", ");break()))) \\ _Jeppe Stig Nielsen_, Jul 31 2015
%Y Cf. A055578, A060504, A134307.
%A _Jud McCranie_, Mar 22 2001