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 A079778 #2 Dec 05 2013 19:55:58 %S A079778 5,11,7,13,11,31,11,17,13,19,17,37,17,23,19,31,23,43,23,29,29,31,29, %T A079778 59,29,41,31,37,37,79,37,41,37,43,41,61,41,47,43,61,47,67,47,53,53,61, %U A079778 53,73,53,59 %N A079778 a(n) = smallest prime number such that a(n) - n is composite. %Y A079778 Cf. A014683. %K A079778 nonn %O A079778 1,1 %A A079778 _Amarnath Murthy_, Feb 03 2003 %E A079778 Corrected and extended by Mark Hudson (mrmarkhudson(AT)hotmail.com), Feb 04 2003