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 A024287 #5 Mar 31 2012 12:34:58 %S A024287 0,1,8,196,10688,937936,113552768,17875345216,3555171842048, %T A024287 875294104443136,261970132442851328,93711886717539460096, %U A024287 39452759032211774455808,19284289193322067327799296 %N A024287 Expansion of sinh(tan(x)^2)/2. %t A024287 Sinh[ Tan[ x ]^2 ]/2 (* Even Part *) %Y A024287 A009613. %K A024287 nonn %O A024287 0,3 %A A024287 _R. H. Hardin_ %E A024287 Extended and signs tested 03/97.