%I #12 Oct 01 2022 00:42:28
%S 2,9,7,5,5,6,7,8,2,0,5,9,7,3,3,9,3,3,0,8,0,2,5,1,5,8,4,6,5,9,6,3,6,5,
%T 4,5,8,2,2,9,0,7,5,3,3,7,6,3,9,0,1,3,2,0,5,0,6,1,3,3,5,4,3,6,8,2,7,3,
%U 3,8,2,2,0,6,9,2,9,2,2,1,8,5,9,3,1,0,6,9,9,0,5,4,1,0,3,3,8,4,6,3,4,2,4,9,1
%N Decimal expansion of Pi/2 - 4/Pi.
%C Torsional rigidity constant for a half-disk shaped shaft.
%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%e 0.29755678205973393308...
%t RealDigits[-4/Pi+Pi/2,10,120][[1]] (* _Harvey P. Dale_, May 02 2012 *)
%K nonn,cons
%O 0,1
%A _Eric W. Weisstein_, Aug 26 2010
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