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 A243267 #7 Feb 16 2025 08:33:22 %S A243267 1,0,8,9,4,8,9,8,7,2,2,3,6,0,8,3,6,3,5,1,1,6,0,1,4,4,2,2,9,1,2,4,5,4, %T A243267 8,7,0,7,3,1,9,4,8,7,1,0,4,8,2,1,8,3,0,7,3,4,1,7,2,5,1,8,5,2,8,8,4,1, %U A243267 5,1,8,5,1,8,5,2,5,2,1,9,2,9,5,3,8,8,3,4,1,7,3,9,7,4,7,0,5,2,1 %N A243267 Decimal expansion of 1/2+G/Pi, the highest limiting crest of a square wave Fourier series, where G is the Gibbs-Wilbraham constant. %D A243267 Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 4.1 Gibbs-Wilbraham constant, p. 249. %H A243267 Eric Weisstein's MathWorld, <a href="https://mathworld.wolfram.com/Wilbraham-GibbsConstant.html">Wilbraham-Gibbs Constant</a> %e A243267 1.08948987223608363511601442291245487... %t A243267 G = SinIntegral[Pi]; RealDigits[1/2 + G/Pi, 10, 99] // First %Y A243267 Cf. A036792, A036793, A243268. %K A243267 nonn,cons %O A243267 1,3 %A A243267 _Jean-François Alcover_, Jun 02 2014