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 A309211 Decimal expansion of a solution to x = 3*tanh(x). 2

%I

%S 2,9,8,4,7,0,4,5,8,5,3,5,7,8,8,6,8,1,5,5,5,9,7,9,1,2,3,4,6,1,5,6,4,3,

%T 1,6,4,4,8,5,3,9,7,0,6,9,1,2,3,8,4,4,2,6,0,4,9,7,0,6,1,5,6,9,4,0,9,9,

%U 8,0,5,7,3,3,3,9,9,6,7,9,4,2,0,6,8,3,3,9,7,9,3,3,8,3,1,7,9,4,4,5,6,4,2,8,5,8

%N Decimal expansion of a solution to x = 3*tanh(x).

%e 2.9847045853578868155597912346...

%p Digits := 120 ; fsolve(x=3*tanh(x),x,0..10.) ; # _R. J. Mathar_, Jul 30, 2019

%t RealDigits[x/.FindRoot[x==3Tanh[x],{x,3},WorkingPrecision->120]][[1]] (* _Harvey P. Dale_, Jul 30 2019 *)

%Y Cf. A309207 (continued fraction expansion), A309208.

%K nonn,cons

%O 1,1

%A _N. J. A. Sloane_, Jul 30 2019

%E More terms from _Daniel Suteu_, Jul 30 2019

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Last modified September 20 03:23 EDT 2020. Contains 337264 sequences. (Running on oeis4.)