

A273942


Primes of the form 3^n + n.


0




OFFSET

1,1


COMMENTS

Terms given correspond to n in A057900.
a(4) has 731 digits.


LINKS

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


MATHEMATICA

Select[Table[3^n + n, {n, 1, 1000}], PrimeQ]


PROG

(MAGMA) [a: n in [0..100]  IsPrime(a) where a is 3^n+n];


CROSSREFS

Cf. A057900, A104743, A129962, A129963.
Sequence in context: A208857 A214162 A167068 * A199646 A214183 A214234
Adjacent sequences: A273939 A273940 A273941 * A273943 A273944 A273945


KEYWORD

nonn,bref,more


AUTHOR

Vincenzo Librandi, Jun 06 2016


STATUS

approved



