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 A104083 #7 Feb 23 2016 18:42:33
%S A104083 2,5,29,127,631,3137,15629,78137,390647,1953151,9765629,48828139,
%T A104083 244140683,1220703131,6103515637,30517578167,152587890649,
%U A104083 762939453127,3814697265637,19073486328181,95367431640673,476837158203149
%N A104083 Smallest prime >= 5^n.
%F A104083 a(n)=A054321(n), n>1. [From _R. J. Mathar_, Dec 13 2008]
%t A104083 Join[{2,5},NextPrime[5^Range[2,30]]] (* _Harvey P. Dale_, Feb 23 2016 *)
%o A104083 (PARI) g(n,b) = for(x=0,n,print1(nextprime(b^x)","))
%K A104083 easy,nonn
%O A104083 0,1
%A A104083 _Cino Hilliard_, Mar 03 2005