OFFSET
1,1
COMMENTS
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
ok[p_]:=Reduce[Mod[x^42+2, p]==0, x, Integers]=!=False; Select[Prime[Range[400]], ok] (* Vincenzo Librandi, Sep 16 2012 *)
PROG
(PARI) /* see A051071 */
(Magma) [p: p in PrimesUpTo(1250) | exists(t){x : x in ResidueClassRing(p) | x^42 eq - 2}]; // Vincenzo Librandi, Sep 16 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
More terms from Joerg Arndt, Jul 27 2011
STATUS
approved