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 A139202 #13 Nov 05 2016 21:16:06
%S A139202 7,9,20,23,46,54,57,71,85,387,396,606,1121,2484,6786,9321,11881,18372
%N A139202 Numbers k such that (k!-7)/7 is prime.
%C A139202 a(19) > 25000. - _Robert Price_, Nov 05 2016
%t A139202 a = {}; Do[If[PrimeQ[(n! - 7)/7], Print[a]; AppendTo[a, n]], {n, 1, 300}]; a (*Artur Jasinski*)
%Y A139202 Cf. A139189, A139190, A139191, A139192, A139193, A139194, A139195, A139196, A139197, A139198.
%Y A139202 Cf. n!/m-1 is a prime: A002982, A082671, A139056, A139199-A139205; n!/m+1 is a prime: A002981, A082672, A089085, A139061, A139058, A139063, A139065, A151913, A137390, A139071 (1<=m<=10).
%K A139202 hard,more,nonn
%O A139202 1,1
%A A139202 _Artur Jasinski_, Apr 11 2008
%E A139202 More terms from Alexis Olson (AlexisOlson(AT)gmail.com), Nov 14 2008
%E A139202 a(13)-a(14) PRPs from _Sean A. Irvine_, Aug 05 2010
%E A139202 a(15)-a(18) PRP from _Robert Price_, Nov 05 2016