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 A181918 #12 Apr 02 2012 20:09:25 %S A181918 3,5,8,2,8,1,1,7,7,9,5,2,5,1,0,2,0,1,8,3,9,4,3,2,0,6,4,9,6,5,8,6,9,0, %T A181918 2,2,8,2,7,4,6,0,2,5,2,3,4,6,1,5,1,1,7,6,7,5,3,8,6,8,6,7,1,5,9,0,8,9, %U A181918 2,1,5,8,4,1,4,6,6,3,3,6,9,5,3,3,1,5,8,3,2,8,6,1,8,1,8,5,0,9,8,8 %N A181918 The value of r at the bifurcation point of the first period-12 cycle of the logistic map f(x) = r*x*(1 - x). %C A181918 Root of a degree 2010*2 = 4020 polynomial %H A181918 Cheng Zhang, <a href="/A181918/a181918.txt">the polynomial for T = r*(r-2)</a> %e A181918 3.5828117795... %Y A181918 Cf. A086178, A086179, A086180, A086181, A091517, A118452, A181906, A181907, A181909, A181910, A181911, A181912, A181913, A181915, A181916, A181917, A181919. %K A181918 nonn,cons %O A181918 1,1 %A A181918 _Cheng Zhang_, Apr 01 2012