A289549 - OEIS

%I #7 Jul 10 2017 03:41:42

%S 2,3,13,37,73569236156415997,2076797833465298943997,

%T 3445912395099815280639997,337699414719781897502719997,

%U 2406637297721880276844203212799997,56505983376657530671203898929399315771217221372411818526783048069123288081453694320639999999999997

%N Primes of the form k!6-3, where k!6 is the sextuple factorial number (A085158).

%H Robert Price, <a href="/A289549/b289549.txt">Table of n, a(n) for n = 1..10</a>

%H Henri & Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n6-3&amp;action=Search">PRP Records.Search for n!6-3.</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, 6] - 3, {i, 3, 100}], PrimeQ[#]&]

%Y Cf. A279646.

%K nonn

%O 1,1

%A _Robert Price_, Jul 07 2017