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 A009620 #12 Apr 02 2017 01:41:22 %S A009620 1,-2,-44,-944,-27632,-975072,-27882048,1986004224,850359527680, %T A009620 222801125934592,57863671042155520,16141663294163980288, %U A009620 4939136307747239694336,1663039626931665431732224 %N A009620 Expansion of sinh(x)*cos(tan(x)). %t A009620 Sinh[ x ]*Cos[ Tan[ x ] ] (* Odd Part *) %K A009620 sign %O A009620 0,2 %A A009620 _R. H. Hardin_ %E A009620 Extended with signs by _Olivier Gérard_, Mar 15 1997