OFFSET
1,1
COMMENTS
a(n) = A045355(n+1) up to n=116, and then both sequences start to differ substantially. - R. J. Mathar, Sep 19 2012
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
ok[p_]:=Reduce[Mod[x^62 + 2, p] == 0, x, Integers] == False; Select[Prime[Range[220]], ok]
PROG
(Magma) [p: p in PrimesUpTo(700) | not exists{x : x in ResidueClassRing(p) | x^62 eq -2} ];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Sep 16 2012
STATUS
approved