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%I #22 Jun 01 2023 01:57:08
%S 2,4,7,4,6,8,0,4,3,6,2,3,6,3,0,4,4,6,2,6,0,6,6,5,9,6,0,3,5,9,1,4,0,1,
%T 4,8,9,2,5,1,6,7,4,0,9,4,0,6,6,7,3,5,8,6,6,8,2,6,1,8,2,7,4,0,6,3,0,4,
%U 8,5,8,9,6,2,0,7,0,0,7,2,5,2,3,9,2,6,8,3,4,9,4,6,3,8,2,6,6,9,9,7,9,9,8,8,1
%N Decimal expansion of the arithmetic-geometric mean (AGM) of 2 and 3.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Arithmetic-GeometricMean.html">Arithmetic-Geometric Mean</a>.
%H Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CompleteEllipticIntegraloftheFirstKind.html">Complete Elliptic Integral of the First Kind</a>.
%F Equals 5*Pi/(4*EllipticK(1/25)), where EllipticK is the complete elliptic integral of the first kind. - _Amiram Eldar_, Jun 01 2023
%e 2.47468043623630446260665960359140148925167409406673586682618274063...
%t RealDigits[ArithmeticGeometricMean[2,3],10,120][[1]] (* _Harvey P. Dale_, Nov 26 2020 *)
%o (PARI) agm(2,3) \\ _Charles R Greathouse IV_, Oct 18 2011
%K nonn,cons
%O 1,1
%A _Zak Seidov_, Oct 05 2002