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A243439 Primes of the form 3^n + 26. 2
29, 53, 107, 269, 2213, 19709, 177173, 43046747, 282429536507, 22876792454987, 239299329230617529590109, 19383245667680019896796749, 1144561273430837494885949696453, 969773729787523602876821942164080815560187 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Associated n: 1, 3, 4, 5, 7, 9, 11, 16, 24, 28, 49, 53, 63, 88, 137, 184, 217, 299, 300, ...

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..27

MATHEMATICA

Select[Table[3^n + 26, {n, 0, 500}], PrimeQ]

PROG

(MAGMA) [a: n in [0..200] | IsPrime(a) where a is 3^n+26];

CROSSREFS

Cf. similar sequences listed in A102903.

Sequence in context: A054822 A034847 A139925 * A216497 A139877 A290706

Adjacent sequences:  A243436 A243437 A243438 * A243440 A243441 A243442

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Jun 05 2014

STATUS

approved

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Last modified September 28 21:22 EDT 2021. Contains 347717 sequences. (Running on oeis4.)