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%I #11 Oct 01 2022 14:07:21
%S 8,7,8,0,5,5,6,8,5,1,7,1,7,2,6,2,4,0,8,6,0,7,4,0,9,7,0,8,7,0,4,0,9,7,
%T 3,5,2,6,2,6,3,2,2,1,5,5,1,0,8,3,6,3,2,7,6,7,4,7,8,6,8,1,0,1,3,6,8,3,
%U 9,7,2,8,8,2,1,6,5,3,8,3,2,9,0,1,9,7,1,8,5,2,6,6,6,5,1,7,6,2,3,2,7,3,5,5,6
%N Decimal expansion of -64/(9 Pi) + Pi.
%C Torsional rigidity constant for a full circular sector (sliced disk)-shaped shaft.
%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/TorsionalRigidity.html">Torsional Rigidity</a>.
%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%e 0.87805568517172624086...
%t RealDigits[Pi - 64/(9 *Pi), 10, 100][[1]] (* _Amiram Eldar_, Jun 09 2021 *)
%o (PARI) Pi - 64/9/Pi \\ _Charles R Greathouse IV_, Oct 01 2022
%Y Cf. A180309, A180310, A180314, A180317.
%K nonn,cons
%O 0,1
%A _Eric W. Weisstein_, Aug 26 2010