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 A139072 #14 Apr 01 2020 02:00:12
%S A139072 1,2,3,4,7,3,11,7,8,5,13,4,28,10,7,8,43,6,21,5,7,16,48,4,14,17,9,7,
%T A139072 241,5,61,11,17,17,8,10,44,38,16,6,131,9,63,12,6,43,73,9,15,10,19,14,
%U A139072 64,11,12,9,24,32,641,5,89,31,8,8,14,11,71,19,25,7,151,6,78,62,15,35,15,22,87
%N A139072 Smallest parameter k such that (n+k!)/n is prime.
%C A139072 a(n) >= A002034(n). - _Charles R Greathouse IV_, Jul 15 2011
%C A139072 a(878) > 5000. - _Jinyuan Wang_, Apr 01 2020
%H A139072 Jinyuan Wang, <a href="/A139072/b139072.txt">Table of n, a(n) for n = 1..877</a>
%t A139072 a = {}; Do[k = 1; While[ ! PrimeQ[(k! + n)/n], k++ ]; AppendTo[a, k], {n, 1, 100}]; a
%o A139072 (PARI) pr(n)=denominator(n)==1 && ispseudoprime(n)
%o A139072 a(n)=my(k);until(pr(k++!/n+1),);k \\ _Charles R Greathouse IV_, Jul 15 2011
%Y A139072 Cf. A082672, A089085, A089130, A117141, A007749, A139056-A139066, A020458, A139068, A137390, A139070-A139075, A136019, A136020, A136026, A136027.
%K A139072 nonn
%O A139072 1,2
%A A139072 _Artur Jasinski_, Apr 07 2008