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A268616
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Least squarefree primitive root of the n-th prime.
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1
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1, 2, 2, 3, 2, 2, 3, 2, 5, 2, 3, 2, 6, 3, 5, 2, 2, 2, 2, 7, 5, 3, 2, 3, 5, 2, 5, 2, 6, 3, 3, 2, 3, 2, 2, 6, 5, 2, 5, 2, 2, 2, 19, 5, 2, 3, 2, 3, 2, 6, 3, 7, 7, 6, 3, 5, 2, 6, 5, 3, 3, 2, 5, 17, 10, 2, 3, 10, 2, 2, 3, 7, 6, 2, 2, 5, 2, 5, 3, 21, 2, 2, 7, 5, 15, 2, 3, 13, 2, 3, 2, 13, 3, 2, 7, 5, 2, 3, 2, 2, 2, 2, 2, 3, 3
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Reap[For[p = 2, p<10^3, p = NextPrime[p], s = Select[PrimitiveRootList[p], SquareFreeQ]; Sow[If[s == {}, 0, First[s]]]]][[2, 1]] (* Jean-François Alcover, Sep 03 2016 *)
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PROG
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(PARI) forprime(p=2, 10^3, for(g=1, p-1, if(issquarefree(g)&&znorder(Mod(g, p))==p-1, print1(g, ", "); break)));
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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