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A243437 Primes of the form 3^n + 16. 2
17, 19, 43, 97, 2203, 6577, 19699, 531457, 1594339, 14348923, 7625597485003, 617673396283963, 239299329230617529590099, 1570042899082081611640534579, 42391158275216203514294433217, 608266787713357709119683992618861323 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Associated n: 0, 1, 3, 4, 7, 8, 9, 12, 13, 15, 27, 31, 49, 57, 60, 75, 139, 147, ...

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..28

MATHEMATICA

Select[Table[3^n + 16, {n, 0, 500}], PrimeQ]

PROG

(MAGMA) [a: n in [0..200] | IsPrime(a) where a is 3^n+16];

CROSSREFS

Cf. similar sequences listed in A102903.

Sequence in context: A262286 A108024 A095081 * A144709 A132239 A075432

Adjacent sequences:  A243434 A243435 A243436 * A243438 A243439 A243440

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Jun 05 2014

STATUS

approved

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Last modified September 17 09:42 EDT 2021. Contains 347478 sequences. (Running on oeis4.)