%I #24 Sep 08 2019 01:08:04
%S 1,2,5,9,8,8,1,5,7,6,6,9,7,4,2,4,0,9,0,7,1,5,0,5,5,1,2,0,7,8,0,6,0,0,
%T 2,0,2,7,1,9,1,7,1,0,3,9,5,6,3,0,7,1,5,1,4,4,6,1,1,1,1,6,4,7,2,3,8,6,
%U 0,4,2,0,1,5,3,8,2,3,0,2,9,8,9,3,3,5,2,0,4,2,2,1,3,0,7,3,5,0,5
%N Decimal expansion of 1/sqrt(63).
%H Vincenzo Librandi, <a href="/A020820/b020820.txt">Table of n, a(n) for n = 0..1000</a>
%F 1/sqrt(63) = 1/(3*sqrt(7)) = sqrt(7)/21.
%e 0.1259881576697424090715055120780600202719171039563071...
%p Digits:=100: evalf(1/sqrt(63)); # _Wesley Ivan Hurt_, Sep 01 2016
%t RealDigits[Sqrt[1/63],10,120][[1]] (* _Harvey P. Dale_, Jun 14 2011 *)
%Y Cf. A010516, A040055.
%K nonn,cons
%O 0,2
%A _N. J. A. Sloane_