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 A078281 #4 Dec 05 2013 19:55:57 %S A078281 1,106,11516,1243426,9688988696,96978050779606,971598777778061426, %T A078281 9725080505141505352336,101523541416869687141725106, %U A078281 1017966959632335053323596697836 %N A078281 A078278(n)/22. %Y A078281 Cf. A078278, A078279, A078280. %K A078281 base,nonn %O A078281 1,2 %A A078281 _Amarnath Murthy_, Nov 25 2002