A138327 Nonsquares not representable as p+g, where p is a prime and g is a primitive root of p.

2, 6, 11, 14, 26, 35, 41, 45, 51

Offset: 1

Author

T. D. Noe, Mar 14 2008

Keywords

• nonn
• more

Comments

This is sequence is probably complete.

There are no more terms below 10^5. - Amiram Eldar, Oct 09 2021

Crossrefs

Cf. A060749 (primitive roots), A138326.

Programs

Mathematica

seq[m_] := Module[{p = Select[Range[m], PrimeQ], s}, s = Complement[Range[m], p + PrimitiveRootList[p] // Flatten]; Select[s, !IntegerQ @ Sqrt[#] &]]; seq[100] (* Amiram Eldar, Oct 09 2021 *)