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%I #16 Jun 12 2023 02:57:10
%S 3,2,0,9,9,1,2,3,0,0,7,2,8,1,5,7,6,7,8,6,2,9,7,4,9,4,8,1,7,7,9,9,0,5,
%T 1,5,8,7,4,8,5,9,2,1,2,4,2,5,1,8,3,4,4,9,4,8,7,4,5,8,6,0,0,5,8,4,6,1,
%U 0,2,4,6,4,1,6,2,4,2,4,0,2,0,4,0,6,6,7,6,7,1,2,1,5,1,4,1,0,8,8,7,0,9,4,2,8,4,6,6,9,1,5,8,3,8,7,5,2,2,6,9
%N Decimal expansion of the square of the constant A130834.
%D Steven R. Finch, Mathematical Constants, Cambridge, 2003, p. 232.
%F From _Amiram Eldar_, Jun 12 2023: (Start)
%F Equals exp(4*G/Pi) = exp(4*A006752/A000796).
%F Equals A097469^4. (End)
%e 3.209912300728157678629749481779905158748592124251834494874586...
%t RealDigits[Exp[4*Catalan/Pi], 10, 120][[1]] (* _Amiram Eldar_, Jun 12 2023 *)
%o (PARI) exp(4*Catalan/Pi) \\ _Charles R Greathouse IV_, Jul 15 2014
%Y Cf. A000796, A006752, A097469, A130834.
%K nonn,cons
%O 1,1
%A _N. J. A. Sloane_, Oct 01 2013
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