%I #17 Jun 11 2023 03:20:31
%S 3,1,4,4,6,0,5,5,1,1,0,2,9,6,9,3,1,4,4,2,7,8,2,3,4,3,4,3,3,7,1,8,3,5,
%T 7,1,8,0,9,2,4,8,8,2,3,1,3,5,0,8,9,2,9,5,0,6,5,9,6,0,7,8,8,0,4,0,4,7,
%U 2,8,1,9,0,4,8,9,2,4,3,6,5,4,8,4,7,6,5,1,5,5,6,6,3,4,0,3,2,5,4
%N Decimal expansion of 4/sqrt((1+sqrt(5))/2).
%H David Richeson, <a href="http://divisbyzero.com/2011/04/27/a-pyramidologists-value-for-pi/">A pyramidologist's value for pi</a> (2011).
%F Equals 4/sqrt(phi).
%e 3.1446055110296931442782343433718357180924882313508929506596...
%t RealDigits[4/Sqrt[GoldenRatio], 10, 120][[1]] (* _Amiram Eldar_, Jun 11 2023 *)
%o (PARI) sqrt(8*sqrt(5)-8) \\ _Charles R Greathouse IV_, Aug 18 2014
%Y Cf. A001622, A202108.
%K nonn,cons
%O 1,1
%A _N. J. A. Sloane_, Dec 12 2011