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%I #15 Sep 08 2022 08:44:44
%S 1,9,6,7,9,6,7,3,1,1,4,8,6,9,0,1,3,9,9,2,7,1,1,3,8,9,9,2,5,2,3,7,3,9,
%T 3,5,6,8,7,8,8,1,9,9,6,0,4,7,2,0,5,1,6,4,3,5,9,8,4,0,5,3,5,8,9,5,1,4,
%U 0,8,5,3,7,3,8,7,3,4,1,4,4,3,9,8,2,1,5,2,5,5,3,5,5,0,2,2,2,0,3
%N Decimal expansion of sqrt(2*Pi*e)/21.
%H Ivan Panchenko, <a href="/A019643/b019643.txt">Table of n, a(n) for n = 0..1000</a>
%e 0.1967967311486901399271138992523739356878819960472...
%t RealDigits[Sqrt[2Pi E]/21,10,120][[1]] (* _Harvey P. Dale_, Oct 26 2014 *)
%o (PARI) sqrt(2*Pi*exp(1))/21 \\ _G. C. Greubel_, Nov 17 2017
%o (Magma) C<i> := ComplexField(); [Sqrt(2*Pi(C)*Exp(1))/21]; // _G. C. Greubel_, Nov 17 2017
%K nonn,cons
%O 0,2
%A _N. J. A. Sloane_
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