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 A009231 #15 Jun 21 2015 21:50:35
%S A009231 1,0,2,-3,24,-100,760,-5271,46424,-430704,4535458,-51583675,641139356,
%T A009231 -8578689912,123397966718,-1895969179755,31013379835728,
%U A009231 -537961001417760,9865047642312306,-190684789616229651,3875088566364987868
%N A009231 Expansion of exp(sinh(x)*log(1+x)).
%t A009231 With[{nn=20}, CoefficientList[Series[Exp[Sinh[x]Log[1+x]], {x,0,nn}] ,x] Range[0,nn]!] (* _Harvey P. Dale_, Dec 19 2012 *)
%K A009231 sign,easy
%O A009231 0,3
%A A009231 _R. H. Hardin_
%E A009231 Extended with signs by _Olivier Gérard_, Mar 15 1997