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%I #5 Jun 08 2017 23:50:00
%S 617,135647,2027537,654729587,7905853581137,
%T 370285001030422820361936176659518850400275455268246313217966819668512968338481634393678502844088430422210693359887
%N Primes of the form k!2+512, where k!2 is the double factorial number (A006852).
%H Robert Price, <a href="/A288412/b288412.txt">Table of n, a(n) for n = 1..8</a>
%H Henri& Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n2+512&action=Search">PRP Records.Search for n!2+512.</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] + 512, {i, 0, 100}], PrimeQ[#]&]
%Y Cf. A076196.
%K nonn
%O 1,1
%A _Robert Price_, Jun 08 2017