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 A139064 #41 Oct 14 2024 01:37:05
%S A139064 5702401,186810624001,2988969984001,2215887149047283712000001,
%T A139064 1476163995198020704238093048217600000001,
%U A139064 19811874077955690819705574245769915192271839538955347505831613562880000000000001
%N A139064 Primes of the form (7+k!)/7.
%C A139064 For numbers k for which (7+k!)/7 is prime see A139065.
%H A139064 Amiram Eldar, <a href="/A139064/b139064.txt">Table of n, a(n) for n = 1..12</a>
%F A139064 a(n) = A139154(A139065(n)). - _Amiram Eldar_, Oct 14 2024
%t A139064 a = {}; Do[If[PrimeQ[(n! + 7)/7], AppendTo[a, (n! + 7)/7]], {n, 1, 50}]; a
%o A139064 (PARI) for(k=7,1e3,if(ispseudoprime(t=k!/7+1),print1(t", "))) \\ _Charles R Greathouse IV_, Jul 15 2011
%Y A139064 Cf. A020458, A082672, A089085, A089130, A117141, A007749, A139056, A139057, A139058, A139059, A139060, A139061, A139062, A139063, A139065, A139066, A139154.
%K A139064 nonn
%O A139064 1,1
%A A139064 _Artur Jasinski_, Apr 07 2008