A083871 - OEIS

%I #16 Apr 22 2022 12:21:08

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

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

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

%N Decimal expansion of sqrt(355/113).

%C 355/113 is an approximation to Pi, accurate to the first 7 digits. - _Harvey P. Dale_, Apr 22 2022

%H S. Ramanujan, <a href="http://www.imsc.res.in/~rao/ramanujan/collectedpapers/modularEqn/modularEqn18.htm">Fig.1:Geometrical construction for sqrt(355/113)</a>

%H S. Ramanujan, <a href="http://www.imsc.res.in/~rao/ramanujan/collectedpapers/squaring/squaring.htm">Squaring The Circle</a>

%H J. C. Santos, <a href="http://translate.google.com/translate?hl=en&amp;sl=pt&amp;u=http://www.fc.up.pt/mp/jcsantos/quadratura.html">Quadrature of the circle</a>

%H Wikipedia, <a href="http://en.wikisource.org/wiki/Squaring_the_circle?oldid=410278">Squaring the circle</a>

%H G. Xiao, Numerical Calculator, <a href="http://wims.unice.fr/wims/en_tool~number~calcnum.en.html">Operate on "sqrt(355/133)"</a>

%e 1.772453926158302796091946476063677662004305549....

%t RealDigits[Sqrt[355/113], 10, 106][[1]] (* _Georg Fischer_, Apr 03 2020 *)

%Y Cf. A068079.

%K nonn,cons

%O 1,2

%A _Lekraj Beedassy_, Jun 18 2003

%E 9 inserted behind a(17) and a(71) corrected by _Georg Fischer_, Apr 03 2020