A102874 Primes of the form 3^k + 14.

17, 23, 41, 257, 743, 19697, 59063, 847288609457, 57264168970223481226273458862846808078011946903, 16173092699229880893718618465586445357583280647840659957623

Offset

1,1

Comments

The sequence of corresponding n starts 1, 2, 3, 5, 6, 9, 10, 25, 98, 122, 153, 190, 258, 511, 549, ... (complete up to 10^3). [Joerg Arndt, Jul 19 2012]

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..18

Formula

a(n) = 3^A219035(n) + 14. - Elmo R. Oliveira, Nov 11 2023

Mathematica

Select[Table[3^n+14, {n, 0, 200}], PrimeQ] (* Vincenzo Librandi, Jul 19 2012 *)

Prog

(Magma) [ a: n in [0..200] | IsPrime(a) where a is 3^n+14 ]; // Vincenzo Librandi, Jul 19 2012

Crossrefs

Cf. A000040, A219035 (corresponding k's).

Sequence in context: A256397 A139843 A151953 * A086532 A159044 A267984

Adjacent sequences: A102871 A102872 A102873 * A102875 A102876 A102877

Keyword

nonn

Author

Roger L. Bagula, Mar 01 2005

Extensions

Edited by N. J. A. Sloane at the suggestion of Andrew S. Plewe, May 16 2007

Status

approved