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Primes of the form k!2-1024, where k!2 is the double factorial number (A006852).
1

%I #4 Jul 13 2017 21:29:19

%S 9371,34458401,191898783962509601,319830986772877770814601,

%T 157952079428395476360490147277858351,

%U 2987435000850314871976096554696085799164511452611632783323554397412108351,283806325080779912837729172696128150920628587998105114415737667754150389601

%N Primes of the form k!2-1024, where k!2 is the double factorial number (A006852).

%H Robert Price, <a href="/A289858/b289858.txt">Table of n, a(n) for n = 1..7</a>

%H Henri & Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n2-1024&amp;action=Search">PRP Records.Search for n!2-1024.</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, 2] - 1024, {i, 10, 100}], PrimeQ[#]&]

%Y Cf. A258866.

%K nonn

%O 1,1

%A _Robert Price_, Jul 13 2017