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%I #16 Aug 04 2022 05:53:58
%S 1,0,5,4,0,9,2,5,5,3,3,8,9,4,5,9,7,7,7,3,3,2,9,6,4,5,1,4,8,1,0,9,0,6,
%T 1,7,7,9,0,6,5,1,8,3,7,9,7,7,5,0,7,2,2,7,5,6,1,9,1,6,8,2,8,4,2,6,4,1,
%U 9,8,1,4,6,2,1,3,0,7,9,4,0,7,1,1,4,7,4,9,3,6,9,4,5,9,7,6,6,7,6
%N Decimal expansion of 1/sqrt(90) = sqrt(10)/30.
%C sqrt(10)/3 = 1.054.. is the length of the shortest line segment needed to dissect the unit square into 6 regions with equal areas if all the line segments start at the same vertex of the square. - _Wesley Ivan Hurt_, May 18 2021
%H Ivan Panchenko, <a href="/A020847/b020847.txt">Table of n, a(n) for n = 0..1000</a>
%F Equals 0.1 * Sum_{k>=0} binomial(2*k,k)/40^k. - _Amiram Eldar_, Aug 04 2022
%e 0.10540925533894597773329645148109061779065183797750...
%t RealDigits[1/Sqrt[90],10,120][[1]] (* _Harvey P. Dale_, May 02 2012 *)
%o (PARI) 1/sqrt(90) \\ _Amiram Eldar_, Aug 04 2022
%K nonn,cons
%O 0,3
%A _N. J. A. Sloane_.
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