cp's OEIS Frontend

A288410 Primes of the form k!2+128, where k!2 is the double factorial number (A006852).

%I A288410 #9 Apr 09 2020 19:36:08
%S A288410 131,233,34459553,654729203,191898783962510753,
%T A288410 563862029680583509947947003,2980227913743310874726229193922003
%N A288410 Primes of the form k!2+128, where k!2 is the double factorial number (A006852).
%C A288410 The next term (a(8)) has 147 digits. - _Harvey P. Dale_, Apr 09 2020
%H A288410 Robert Price, <a href="/A288410/b288410.txt">Table of n, a(n) for n = 1..8</a>
%H A288410 Henri& Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n2+128&amp;action=Search">PRP Records.Search for n!2+128.</a>
%H A288410 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 A288410 OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>
%t A288410 MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
%t A288410 Select[Table[MultiFactorial[i, 2] + 128, {i, 0, 100}], PrimeQ[#]&]
%t A288410 Select[Range[100]!!+128,PrimeQ] (* _Harvey P. Dale_, Apr 09 2020 *)
%Y A288410 Cf. A076194.
%K A288410 nonn
%O A288410 1,1
%A A288410 _Robert Price_, Jun 08 2017