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A138941
Primes of the form (13^n - 3^n)/10.
0
6274633, 3405994336744928448432949523054569, 469545242509890879708897137286442565790534241
OFFSET
1,1
COMMENTS
The next term (a(4)) has 299 digits. - Harvey P. Dale, Dec 06 2017
MATHEMATICA
a={}; Do[p=(13^n-3^n)/10; If[PrimeQ[p], AppendTo[a, p]], {n, 1, 16^2}]; a
Select[Table[(13^n-3^n)/10, {n, 300}], PrimeQ] (* Harvey P. Dale, Dec 06 2017 *)
CROSSREFS
Cf. A128028.
Sequence in context: A306872 A186838 A204654 * A251379 A203894 A152070
KEYWORD
nonn,bref
AUTHOR
STATUS
approved