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 A197838 #5 Mar 30 2012 18:57:53 %S A197838 9,5,5,3,7,2,4,3,1,0,9,3,2,1,6,6,5,8,4,4,0,0,6,7,0,7,5,0,0,0,1,3,7,1, %T A197838 6,1,3,6,8,2,1,6,4,8,7,5,1,2,5,4,9,5,4,9,4,2,5,4,5,4,2,0,6,2,6,6,3,2, %U A197838 5,2,9,1,7,6,7,6,2,8,7,2,3,4,8,9,8,4,5,2,8,9,3,5,3,0,0,4,4,8,9 %N A197838 Decimal expansion of least x>0 satisfying (cos(x))^2+(sin(3*Pi*x))^2=1/2. %C A197838 For a discussion and guide to related sequences, see A197739. %e A197838 x=0.95537243109321665844006707500013716136821... %t A197838 (See the program at A197833.) %Y A197838 Cf. A197739, A197833. %K A197838 nonn,cons %O A197838 0,1 %A A197838 _Clark Kimberling_, Oct 19 2011