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 A257452 #6 Apr 24 2015 18:29:49 %S A257452 7,2,4,6,1,1,3,5,3,7,7,6,7,0,8,4,7,5,7,3,8,9,9,0,4,5,3,5,2,5,6,3,1,7, %T A257452 8,4,3,4,7,8,6,5,1,0,1,8,3,8,3,9,1,7,1,4,9,5,9,3,9,9,8,6,8,4,8,5,3,3, %U A257452 5,8,5,6,6,3,2,9,2,0,6,6,5,7,9,6,5,0,4,6,4,9,9,1,2,7,0,7,5,0,1,4,9,1,6,0,0 %N A257452 Decimal expansion of the maximum of (1-cos(x))/x. %C A257452 The location of the maximum, and more comments, are in A257451. %H A257452 Stanislav Sykora, <a href="/A257452/b257452.txt">Table of n, a(n) for n = 0..2000</a> %F A257452 Equals (1-cos(A257451))/A257451. %e A257452 0.724611353776708475738990453525631784347865101838391714959... %o A257452 (PARI) xmax = solve(x=1,3,x*sin(x)-1+cos(x)); a=(1-cos(xmax))/xmax %Y A257452 Cf. A257451. %K A257452 nonn,cons %O A257452 0,1 %A A257452 _Stanislav Sykora_, Apr 23 2015