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%I #12 Apr 02 2012 20:10:13
%S 3,6,7,9,7,0,3,8,4,9,8,0,3,2,9,4,7,3,0,2,7,1,7,2,8,9,8,8,1,5,7,7,3,5,
%T 7,8,2,1,1,6,7,5,6,9,1,5,0,3,3,2,5,1,5,9,3,9,6,9,6,3,4,9,5,7,8,3,3,0,
%U 7,5,2,8,5,7,4,5,0,9,8,2,6,2,4,8,2,1,0,6,9,0,5,1,7,2,2,2,4,0,3,8
%N The value of r at the bifurcation point of the first period-13 cycle of the logistic map f(x) = r*x*(1 - x).
%C Root of a degree 4095*2 = 8190 polynomial.
%H Cheng Zhang, <a href="/A181919/a181919.txt">the polynomial of T = r*(r-2)</a>
%e 3.6797038498...
%Y Cf. A086178, A086179, A086180, A086181, A091517, A118452, A181906, A181907, A181909, A181910, A181911, A181912, A181913, A181915, A181916, A181917, A181918.
%K nonn,cons
%O 1,1
%A _Cheng Zhang_, Apr 01 2012
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