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%I #14 May 15 2019 12:39:29
%S 3,1,4,1,5,9,2,6,5,3,5,8,9,7,9,3,0,1,6,4,9,5,8,8,8,6,5,3,1,9,6,7,2,3,
%T 7,4,6,4,0,6,8,2,4,8,8,1,4,3,8,4,4,3,9,3,9,5,8,3,7,7,3,5,6,1,9,3,6,2,
%U 8,7,0,8,6,3,8,6,2,1,8,2,6,1,6,9,8,6,0,4,9,3,7,9,0,6,7,2,3,4,9,9,5,5,6,2
%N Decimal expansion of log(640320^3)/sqrt(163), a Ramanujan constant producing 16 correct digits of Pi.
%H Jonathan M. Borwein, <a href="http://www.cecm.sfu.ca/~jborwein/aesthetics.pdf">Aesthetics for the Working Mathematician</a>
%H Eric Weisstein's MathWorld, <a href="http://mathworld.wolfram.com/RamanujanConstant.html">Ramanujan Constant</a>
%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>
%e 3.141592653589793|0164958886531967237464..., where | shows the position from where the digits differ.
%t RealDigits[Log[640320^3]/Sqrt[163], 10, 104] // First
%o (PARI) log(640320^3)/sqrt(163) \\ _Charles R Greathouse IV_, Apr 20 2016
%Y Cf. A000796, A060295.
%K nonn,cons,easy
%O 1,1
%A _Jean-François Alcover_, Dec 29 2014
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