A019645 - OEIS

%I #18 Apr 11 2024 15:11:50

%S 2,9,2,2,2,8,2,3,6,5,3,2,2,2,7,7,8,6,4,5,4,1,6,2,3,0,7,6,1,0,7,6,8,2,

%T 3,1,5,3,9,7,9,0,7,5,5,2,6,4,6,5,6,6,8,5,9,0,1,7,7,4,0,0,1,1,4,7,1,9,

%U 5,6,1,7,2,3,6,2,9,5,6,8,8,4,4,4,3,9,5,6,5,6,7,7,6,7,0,5,8,9,2

%N Decimal expansion of sqrt(Pi*e).

%H Ivan Panchenko, <a href="/A019645/b019645.txt">Table of n, a(n) for n = 1..1000</a>

%F Equals A002161*A019774. - _R. J. Mathar_, Apr 11 2024

%e 2.9222823653222778645416230761076823153979...

%t RealDigits[Sqrt[Pi E],10,120][[1]] (* _Harvey P. Dale_, Jun 14 2014 *)

%o (PARI) sqrt(Pi*exp(1)) \\ _G. C. Greubel_, Nov 17 2017

%o (Magma) C<i> := ComplexField(); [Sqrt(Pi(C)*Exp(1))]; // _G. C. Greubel_, Nov 17 2017

%K nonn,cons

%O 1,1

%A _N. J. A. Sloane_