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Decimal expansion of (1/2)(1 + sqrt(5 + 4*sqrt(5))).
4

%I #4 Feb 13 2018 19:18:04

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

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

%U 3,2,3,0,3,6,2,7,1,0,7,1,3,2,7,5,1,0

%N Decimal expansion of (1/2)(1 + sqrt(5 + 4*sqrt(5))).

%H Clark Kimberling, <a href="/A298750/b298750.txt">Table of n, a(n) for n = 1..10000</a>

%e constant = 2.3671014909478781990... = positive zero of x^2 - x - 1- sqrt(5).

%t r = (1/2)*(1 + Sqrt[5 + 4 Sqrt[5]])

%t RealDigits[N[r, 100], 10][[1]]; (* A298750 *)

%Y Cf. A298749, A298751, A298752.

%K nonn,easy,cons

%O 1,1

%A _Clark Kimberling_, Feb 13 2018