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A020817 Decimal expansion of 1/sqrt(60). 3

%I

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

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

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

%N Decimal expansion of 1/sqrt(60).

%C Equals 0.12909...= sqrt(5/3)/10 where sqrt(5/3) = sum_{n=0..infinity} binomial(2n,n)/10^n [Lehmer, Am. Math. Monthly 92 (1985) 449] [From _R. J. Mathar_, Mar 04 2009]

%H Ivan Panchenko, <a href="/A020817/b020817.txt">Table of n, a(n) for n = 0..1000</a>

%t RealDigits[N[1/Sqrt[60], 200]] (* _Vladimir Joseph Stephan Orlovsky_, Jun 12 2011 *)

%K nonn,cons

%O 0,2

%A _N. J. A. Sloane_.

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