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 A080582 #3 Mar 30 2012 16:49:39 %S A080582 2,5,31,1171,1638151,3146427633211,11417451157987217266902031, %T A080582 148220146017562180410722652131732909019133677172771, %U A080582 24679246312469754122885261982560498845861213427729059585299568584375038492624323416323464976525500951 %N A080582 Ratios of successive terms of A079278. %K A080582 nonn %O A080582 1,1 %A A080582 _N. J. A. Sloane_, Feb 22 2003