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 A288448 #4 Jun 09 2017 19:43:57 %S A288448 5,9,17,21,29,53,57,105,111,279,303,435,483,677,1049,1217,1395,9651, %T A288448 26031,31937 %N A288448 Numbers k such that k!6 + 32 is prime, where k!6 is the sextuple factorial number (A085158 ). %C A288448 Corresponding primes are: 37, 59, 967, 8537, 623677, 2229272062357, 38661097149707, ... %C A288448 a(21) > 50000. %C A288448 Terms > 29 correspond to probable primes. %H A288448 Henri & Renaud Lifchitz, <a href="http://www.primenumbers.net/prptop/searchform.php?form=n!6+32&action=Search">PRP Records. Search for n!6+32.</a> %H A288448 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 A288448 OpenPFGW Project, <a href="http://sourceforge.net/projects/openpfgw/">Primality Tester</a> %e A288448 17!6 + 32 = 17*11*5 + 32 = 967 is prime, so 17 is in the sequence. %t A288448 MultiFactorial[n_, k_] := If[n < 1, 1, n*MultiFactorial[n - k, k]]; %t A288448 Select[Range[0, 50000], PrimeQ[MultiFactorial[#, 6] + 32] &] %Y A288448 Cf. A007661, A037082, A084438, A123910, A242994. %K A288448 nonn,more %O A288448 1,1 %A A288448 _Robert Price_, Jun 09 2017