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%I #12 Jun 09 2021 05:35:25
%S 0,2,1,6,5,0,6,3,5,0,9,4,6,1,0,9,6,6,1,6,9,0,9,3,0,7,9,2,6,8,8,2,3,4,
%T 0,4,5,8,6,7,8,5,0,6,5,6,7,2,6,2,9,7,5,7,8,5,0,6,9,7,5,8,7,2,4,3,1,4,
%U 9,1,6,2,7,1,1,3,6,0,0,0,0,4,6,3,5,1,4,3,2,7,3,3,4,4,6,5,6,0,7,1,9,5,9,4,5
%N Decimal expansion of the torsional rigidity constant for an equilateral triangular shaft.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/TorsionalRigidity.html">Torsional Rigidity</a>.
%F Equals sqrt(3)/80.
%e 0.02165063509461096616...
%t RealDigits[Sqrt[3]/80, 10, 100][[1]] (* _Amiram Eldar_, Jun 09 2021 *)
%Y Cf. A180309, A180310, A180311, A180314.
%K nonn,cons
%O 0,2
%A _Eric W. Weisstein_, Aug 27 2010