%I #16 Oct 01 2022 22:42:00
%S 5,6,5,5,9,5,6,2,4,6,3,6,1,3,1,1,1,3,1,0,0,1,0,9,0,3,7,2,8,3,9,1,5,6,
%T 3,5,4,5,5,8,9,7,5,1,0,6,4,1,2,1,8,0,3,5,5,3,1,5,8,7,6,5,7,0,3,6,0,7,
%U 0,6,5,4,3,7,1,6,6,7,4,0,8,1,4,1,3,7,2,9,4,7,4,8,3,5,5,3,1,0,7,5,1,5,0,4,4
%N Decimal expansion of 81*sqrt(3)/(8*Pi^3).
%C The maximum value of sin(A)*sin(B)*sin(C)/(A*B*C), where A, B and C are the vertex angles of a triangle (Abi-Khuzam, 1974). - _Amiram Eldar_, Jun 27 2021
%H Faruk Abi-Khuzam, <a href="https://www.e-periodica.ch/digbib/view?pid=edm-001%3A1974%3A29%3A%3A7#147">Proof of Yff's conjecture on the Brocard angle of a triangle</a>, Elem. Math., Vol. 29 (1974), pp. 141-142.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Abi-KhuzamInequality.html">Abi-Khuzam Inequality</a>.
%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%e 0.56559562463613111310...
%t RealDigits[(81Sqrt[3])/(8Pi^3),10,120][[1]] (* _Harvey P. Dale_, Apr 15 2012 *)
%o (PARI) 81*sqrt(3)/8/Pi^3 \\ _Charles R Greathouse IV_, Oct 01 2022
%K nonn,cons
%O 0,1
%A _Eric W. Weisstein_, Jan 08 2007
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