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 A000484 #20 Aug 28 2016 18:23:32 %S A000484 1,1,0,-1,-1,0,1,1,0,-1,-1,0,1,1,0,-1,-1,0,1,1,0,-1,-1,-1,0,1,1,0,-1, %T A000484 -1,0,1,1,0,-1,-1,0,1,1,0,-1,-1,0,1,1,1,0,-1,-1,0,1,1,0,-1,-1,0,1,1,0, %U A000484 -1,-1,0,1,1,0,-1,-1,-1,0,1,1,0,-1,-1,0,1,1,0,-1,-1,0,1,1,0 %N A000484 a(n) = round(cos(n)). %H A000484 T. D. Noe, <a href="/A000484/b000484.txt">Table of n, a(n) for n = 0..1000</a> %p A000484 f := n->round(evalf(cos(n))); %t A000484 Array[ Round[ Cos[ # ] // N ]&, 90, 0 ] %K A000484 sign,easy %O A000484 0,1 %A A000484 _N. J. A. Sloane_