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 A052259 #9 May 30 2018 03:56:38 %S A052259 11,13,17,19,29,13,31,17,37,43,23,23,11,19,31,19,17,13,59,29,19,23,53, %T A052259 41,11,61,67,17,13,47,19,53,19,73,53,11,23,37,23,13,71,29,83,41,17,43, %U A052259 79,79,41,19,83,37,53,19,79,37,13,23,83,11,43,13,59,41,37,19,43,59,83 %N A052259 Last filtering prime (A052180) of primes p such that next prime is p+14. %Y A052259 Cf. A031932, A052180. %K A052259 nonn %O A052259 1,1 %A A052259 _Labos Elemer_, Feb 02 2000