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 A027238 #4 Mar 30 2012 18:56:14 %S A027238 1,1,2,4,7,17,31,76,156,352,784,1674,3962,8129,20173,43193,103522, %T A027238 230536,535294,1231484,2787700,6591350,14613710,35369380,77886902, %U A027238 190329098,428113940,1027180798,2353823912,5559635866,12950837432 %N A027238 Greatest number in row n of array T given by A026769. %K A027238 nonn %O A027238 0,3 %A A027238 _Clark Kimberling_