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 A249206 #7 Jun 01 2017 14:49:06 %S A249206 4,2,1,7,5,3,9,3,4,6,4,8,4,2,6,8,2,4,2,3,8,1,2,2,9,5,8,5,9,2,7,7,3,0, %T A249206 5,9,1,0,7,7,1,0,6,3,3,2,8,3,0,6,4,3,5,1,5,6,3,3,9,3,5,9,0,1,1,1,2,1, %U A249206 4,4,3,9,2,0,4,1,2,7,9,4,2,6,9,3,6,5,7,1,7,3,7,2,4,8,4,4,9,0,2,1,2,3 %N A249206 Decimal expansion of the logarithmic capacity of the unit equilateral triangle. %D A249206 Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 4.9 Integer Chebyshev constants, p. 268. %H A249206 Steven Finch, <a href="/A249205/a249205.pdf">Electrical capacitance</a> [Cached copy, with permission of the author] %F A249206 k = (sqrt(3)/(8*Pi^2))*Gamma(1/3)^3. %e A249206 0.421753934648426824238122958592773059107710633283... %t A249206 k = (Sqrt[3]/(8*Pi^2))*Gamma[1/3]^3; RealDigits[k, 10, 102] // First %Y A249206 Cf. A073005, A249205, A249220. %K A249206 nonn,cons,easy %O A249206 0,1 %A A249206 _Jean-François Alcover_, Oct 23 2014