%I #7 Jan 20 2024 18:29:52
%S 3,5,7,23,47,233,587,3467,65837,40883537,151412627,1267389587,
%T 74389431691577,885821206052908127,13005556505149168230729834377,
%U 583723376551025432768079734666930727861956890308512536691015627
%N Primes of the form k!4+2, where k!4 is the quadruple factorial number (A007662).
%H Robert Price, <a href="/A288890/b288890.txt">Table of n, a(n) for n = 1..22</a>
%H Henri& Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n4+2&action=Search">PRP Records.Search for n!4+2.</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, 4] + 2, {i, 0, 100}], PrimeQ[#]&]
%Y Cf. A007662, A283553.
%K nonn
%O 1,1
%A _Robert Price_, Jun 18 2017
|