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 A123318 #4 Mar 30 2012 18:50:55 %S A123318 2,3,5,5,7,7,11,11,11,11,13,13,17,17,17,17,19,19,23,23,23,23,31,29,29, %T A123318 29,29,29,31,31,47,37,37,37,37,37,41,41,41,41,43,43,47,47,47,47,79,53, %U A123318 53,53,53,53,61,59,59,59,59,59,61,61,317,67,67,67,67,67,71,71,71,71,73 %N A123318 a(n) = smallest prime of the form n + (prime power). %C A123318 a(n) = n + A123317(n). %K A123318 nonn %O A123318 1,1 %A A123318 _Reinhard Zumkeller_, Sep 27 2006