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 A100954 #41 Nov 15 2023 03:56:02 %S A100954 3,1,4,6,4,4,6,6,0,9,4,0,6,7,2,6,2,3,7,7,9,9,5,7,7,8,1,8,9,4,7,5,7,5, %T A100954 4,8,0,3,5,7,5,8,2,0,3,1,1,5,5,7,6,2,9,8,1,7,0,5,8,3,0,0,6,5,5,0,2,3, %U A100954 1,6,8,8,0,3,8,4,4,7,3,2,4,0,2,8,7,4,0,3,1,1,6,4,1,8,0,8,9,6,0 %N A100954 Decimal expansion of 7/2 - sqrt(2)/4. %C A100954 An approximation to Pi, see Blatner. - _Robert G. Wilson v_, Dec 15 2012 %C A100954 This constant is three plus the ratio of the area (A) to the perimeter (P) of an isosceles right triangle with unit legs, 3 + A/P = 3 + (1/2)/(2 + sqrt(2)). - _José de Jesús Camacho Medina_, Mar 02 2018 %D A100954 David Blatner, Spectrums, Our Mind-Boggling Universe from Infinitesimal to Infinity, Walker & Co, USA, 2012. %H A100954 G. C. Greubel, <a href="/A100954/b100954.txt">Table of n, a(n) for n = 1..10000</a> %F A100954 Equals (14 - sqrt(2))/4 = 3 + 1/J, where J = 2*(2 + sqrt(2)) = A365823. - _Wolfdieter Lang_, Nov 11 2023 %e A100954 3.14644660940672623779957781894757548035758203115576298170583... %t A100954 RealDigits[(14 - Sqrt[2])/4, 10, 111][[1]] (* _Robert G. Wilson v_, Dec 15 2012 *) %o A100954 (PARI) 7/2 - sqrt(2)/4 \\ _Charles R Greathouse IV_, Mar 25 2014 %o A100954 (Magma) SetDefaultRealField(RealField(100)); (14 - Sqrt(2))/4; // _G. C. Greubel_, Oct 01 2018 %K A100954 nonn,cons %O A100954 1,1 %A A100954 _N. J. A. Sloane_, Jan 11 2005