This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A289852 #12 Apr 15 2025 08:27:08
%S A289852 89,929,135119,34459409,7905853580609,
%T A289852 669325572332691496707919692320662308340434243618803739488329723923351785805848442856791239207612629457179653299076271283992814866750698368061459208762618124485015869140609
%N A289852 Primes of the form k!2 - 16, where k!2 is the double factorial number (A006882).
%H A289852 Robert Price, <a href="/A289852/b289852.txt">Table of n, a(n) for n = 1..7</a>
%H A289852 Henri and Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n2-16&action=Search">PRP Records.Search for n!2-16</a>.
%H A289852 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 A289852 OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a>.
%F A289852 a(n) = A006882(A258616(n)) - 16. - _Elmo R. Oliveira_, Apr 14 2025
%t A289852 MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
%t A289852 Select[Table[MultiFactorial[i, 2] - 16, {i, 6, 100}], PrimeQ[#]&]
%Y A289852 Cf. A006882, A258616.
%K A289852 nonn
%O A289852 1,1
%A A289852 _Robert Price_, Jul 13 2017