A020776 - OEIS

%I #16 May 18 2026 23:08:19

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

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

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

%N Decimal expansion of 1/sqrt(19).

%H Ivan Panchenko, <a href="/A020776/b020776.txt">Table of n, a(n) for n = 0..1000</a>

%H <a href="/index/Al#algebraic_02">Index entries for algebraic numbers, degree 2</a>.

%e 0.229415733870561765907209578097874508375631785538549733520544428324187227800...

%t RealDigits[N[1/Sqrt[19],200]] (* _Vladimir Joseph Stephan Orlovsky_, May 30 2010 *)

%o (PARI) 1/sqrt(19) \\ _Charles R Greathouse IV_, May 18 2026

%K nonn,cons

%O 0,1

%A _N. J. A. Sloane_