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A138941 Primes of the form (13^n - 3^n)/10. 0
6274633, 3405994336744928448432949523054569, 469545242509890879708897137286442565790534241 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The next term (a(4)) has 299 digits. - Harvey P. Dale, Dec 06 2017

LINKS

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

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

Adjacent sequences:  A138938 A138939 A138940 * A138942 A138943 A138944

KEYWORD

nonn,bref

AUTHOR

Vladimir Joseph Stephan Orlovsky, May 16 2008

STATUS

approved

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Last modified February 21 23:00 EST 2020. Contains 332113 sequences. (Running on oeis4.)