A138958 Primes of the form (6^n + 5^n)/11.

31, 991, 1608145354351

Offset

1,1

Comments

The next term has 308 digits. - Harvey P. Dale, Sep 16 2022

Links

Table of n, a(n) for n=1..3.

Mathematica

a={}; Do[p=(6^n+5^n)/11; If[PrimeQ[p], AppendTo[a, p]], {n, 1, 12^2}]; a
Select[Table[(6^n+5^n)/11, {n, 20}], PrimeQ] (* Harvey P. Dale, Sep 16 2022 *)

Crossrefs

Cf. A128336.

Sequence in context: A009975 A042862 A159674 * A158675 A154808 A307588

Adjacent sequences: A138955 A138956 A138957 * A138959 A138960 A138961

Keyword

nonn,bref

Author

Vladimir Joseph Stephan Orlovsky, May 16 2008

Status

approved