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 A379394 #9 Apr 03 2025 04:13:56 %S A379394 0,9,6,3,2,9,6,1,6,5,2,1,8,7,8,2,4,7,0,1,8,4,3,6,4,8,9,1,7,5,3,8,1,3, %T A379394 4,4,9,7,0,3,1,6,2,6,6,9,7,9,7,4,8,2,1,7,9,6,4,5,8,9,6,7,8,4,2,8,8,0, %U A379394 8,7,9,0,9,0,6,7,0,4,3,1,3,9,7,1,5,6,5,8,0,3,0,9,8,8,8,7,3,3,3,2,5 %N A379394 Decimal expansion of the area of the convex hull of a circle of circumference 1 and a line segment of length 1/2 with midpoint at the circle center. %D A379394 Steven R. Finch, Mathematical Constants, Encyclopedia of Mathematics and its Applications, vol. 94, Cambridge University Press, 2003, Section 8.4.2, p. 495. %F A379394 Equals (sqrt(Pi^2-4) + Pi - 2*arccos(2/Pi))/(4*Pi^2). %e A379394 0.096329616521878247018436489175381344970316266979748... %t A379394 RealDigits[(Sqrt[Pi^2-4]+Pi-2ArcCos[2/Pi])/(4Pi^2),10,100][[1]] %Y A379394 Cf. A000796, A002388, A060294, A212002, A275477. %K A379394 nonn,cons %O A379394 0,2 %A A379394 _Stefano Spezia_, Dec 22 2024