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A138958
Primes of the form (6^n + 5^n)/11.
1
31, 991, 1608145354351
OFFSET
1,1
COMMENTS
The next term has 308 digits. - Harvey P. Dale, Sep 16 2022
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
KEYWORD
nonn,bref
AUTHOR
STATUS
approved