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A102874 Primes of the form 3^k + 14. 2

%I #20 Nov 11 2023 13:55:22

%S 17,23,41,257,743,19697,59063,847288609457,

%T 57264168970223481226273458862846808078011946903,

%U 16173092699229880893718618465586445357583280647840659957623

%N Primes of the form 3^k + 14.

%C 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]

%H Vincenzo Librandi, <a href="/A102874/b102874.txt">Table of n, a(n) for n = 1..18</a>

%F a(n) = 3^A219035(n) + 14. - _Elmo R. Oliveira_, Nov 11 2023

%t Select[Table[3^n+14,{n,0,200}],PrimeQ] (* _Vincenzo Librandi_, Jul 19 2012 *)

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

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

%K nonn

%O 1,1

%A _Roger L. Bagula_, Mar 01 2005

%E Edited by _N. J. A. Sloane_ at the suggestion of _Andrew S. Plewe_, May 16 2007

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Last modified April 25 12:15 EDT 2024. Contains 371969 sequences. (Running on oeis4.)