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 A244046 #7 Feb 16 2025 08:33:22 %S A244046 1,5,4,4,9,4,1,7,0,0,3,7,1,5,9,3,1,5,4,1,8,5,0,9,6,8,3,8,4,7,0,6,2,6, %T A244046 5,8,0,2,4,7,3,6,0,8,2,8,4,0,0,6,7,4,1,7,4,0,8,0,5,1,5,9,4,9,4,3,7,0, %U A244046 0,9,9,5,7,4,2,3,0,0,6,9,8,6,0,6,6,9,0,7,3,8,5,0,8,0,6,1,7,9,7,3,6,3,9,3,7 %N A244046 Decimal expansion of the maximal width of a Reuleaux triangle avoiding all vertices of the integer square lattice. %D A244046 Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, Section 8.10 Reuleaux triangle constants, p. 515. %H A244046 Eric Weisstein's MathWorld, <a href="https://mathworld.wolfram.com/ReuleauxTriangle.html">Reuleaux Triangle</a> %H A244046 Wikipedia, <a href="http://en.wikipedia.org/wiki/Reuleaux_triangle">Reuleaux Triangle</a> %F A244046 Smallest positive root of 4*x^6 - 12*x^5 + x^4 + 22*x^3 - 14*x^2 - 4*x + 4. %e A244046 1.54494170037159315418509683847062658... %t A244046 w = Root[4*x^6 - 12*x^5 + x^4 + 22*x^3 - 14*x^2 - 4*x + 4, x, 3]; RealDigits[w, 10, 105] // First %Y A244046 Cf. A060708, A066666, A137615. %K A244046 nonn,cons %O A244046 1,2 %A A244046 _Jean-François Alcover_, Jun 18 2014