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 A009619 #12 Apr 02 2017 01:41:39 %S A009619 1,-2,16,-104,1600,-29952,644736,-18383616,645554176,-25645936640, %T A009619 1160636121088,-60217271582720,3462113293664256,-212189015619731456, %U A009619 13428030504825257984,-819223993894210109440,36420049717189727485952 %N A009619 Expansion of sinh(x)*cos(sin(x)). %t A009619 Sinh[ x ]*Cos[ Sin[ x ] ] (* Odd Part *) %K A009619 sign %O A009619 0,2 %A A009619 _R. H. Hardin_ %E A009619 Extended with signs by _Olivier Gérard_, Mar 15 1997