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 A206161 #11 Feb 20 2013 08:37:52
%S A206161 8,3,7,4,0,6,6,9,6,7,6,9,0,8,6,4,8,3,0,8,3,6,0,2,7,2,2,1,8,0,8,3,2,2,
%T A206161 6,1,3,7,9,0,6,1,6,6,1,2,9,9,0,1,0,8,4,4,3,4,1,8,9,8,0,0,2,0,8,6,0,1,
%U A206161 9,0,3,9
%N A206161 Decimal expansion of the Fresnel integral int_{x=0..infinity} cos(x^4) dx.
%H A206161 Wikipedia, <a href="http://en.wikipedia.org/wiki/Fresnel_integral">Fresnel Integral</a>
%F A206161 Equals A093954 * A144981 / A068465 .
%e A206161 0.83740669676908648308360272218083226...
%p A206161 evalf(Pi*cos(Pi/8)/GAMMA(3/4)/2^(3/2)) ;
%t A206161 RealDigits[ Sqrt[2 + Sqrt[2]]*Gamma[1/4]/8, 10, 72] // First (* _Jean-François Alcover_, Feb 20 2013 *)
%Y A206161 Cf. A204067.
%K A206161 nonn,cons,easy
%O A206161 0,1
%A A206161 _R. J. Mathar_, Jan 10 2013