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%I #6 Dec 14 2019 11:26:39
%S 38557,189757,17961239276317,3091650738156317,2576442067869429740317,
%T 142299187144047333874073580317,3304568487306325139410771509247980317,
%U 1745488670154377397414943478973600699284193279980317
%N Primes of the form k!3-19683, where k!3 is the triple factorial number (A007661).
%H Robert Price, <a href="/A289824/b289824.txt">Table of n, a(n) for n = 1..14</a>
%H Henri & Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n3-19683&action=Search">PRP Records.Search for n!3-19683.</a>
%H Joe McLean, <a href="http://web.archive.org/web/20091027034731/http://uk.geocities.com/nassarawa%40btinternet.com/probprim2.htm">Interesting Sources of Probable Primes</a>
%H OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>
%t MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
%t Select[Table[MultiFactorial[i, 3] - 19683, {i, 15, 100}], PrimeQ[#]&]
%t Select[Table[Times@@Range[n,1,-3]-19683,{n,15,100}],PrimeQ] (* _Harvey P. Dale_, Dec 14 2019 *)
%Y Cf. A267029.
%K nonn
%O 1,1
%A _Robert Price_, Jul 12 2017
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