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 A109375 #4 Mar 20 2015 19:05:01 %S A109375 0,1,1,1,1,5,1,7,1,3,5,11,1,13,7,5,1,17,1,19,5,7,11,23,1,25,13,9,7,29, %T A109375 5,31,1,11,17,35,3,37,19,13,5,41,7,43,11,15,23,47,1,49,25,17,13,53,3, %U A109375 55,7,19,29,59,1,61,31,21,1,65,11,67,17,23,35,71,1,73,37,25 %N A109375 Bisection of A093411. %K A109375 nonn %O A109375 0,6 %A A109375 _Robert G. Wilson v_, Aug 27 2005