%I #12 Nov 12 2023 12:21:06
%S 5,59,19661,1594301,22876792454939,2954312706550833698621,
%T 8862938119652501095907,
%U 6170365191715177779482467945369860501784408913594010934644126825341528124785676079587659
%N Primes of the form 3^k - 22.
%H Robert Price, <a href="/A289724/b289724.txt">Table of n, a(n) for n = 1..9</a>
%H F. Firoozbakht and M. F. Hasler, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL13/Hasler/hasler2.html">Variations on Euclid's formula for Perfect Numbers</a>, JIS 13 (2010) #10.3.1.
%H Henri and Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop">PRP Records</a>
%H OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>
%F a(n) = 3^A219043(n) - 22. - _Elmo R. Oliveira_, Nov 12 2023
%t Select[Table[3^k - 22], {k, 3, 100}], PrimeQ[#] &]
%Y Cf. A000040, A219043 (corresponding k's).
%K nonn
%O 1,1
%A _Robert Price_, Sep 02 2017