%I #14 Aug 21 2023 12:24:28
%S 6,4,8,0,7,4,0,6,9,8,4,0,7,8,6,0,2,3,0,9,6,5,9,6,7,4,3,6,0,8,7,9,9,6,
%T 6,5,7,7,0,5,2,0,4,3,0,7,0,5,8,3,4,6,5,4,9,7,1,1,3,5,4,3,9,7,8,0,9,6,
%U 1,7,3,7,7,8,4,4,0,4,4,3,7,1,4,0,0,3,6,0,9,0,6,6,0,5,6,1,0,2,3
%N Decimal expansion of square root of 42.
%C Continued fraction expansion is 6 followed by {2, 12} repeated. - _Harry J. Smith_, Jun 05 2009
%H Harry J. Smith, <a href="/A010496/b010496.txt">Table of n, a(n) for n = 1..20000</a>
%H <a href="/index/Al#algebraic_02">Index entries for algebraic numbers, degree 2</a>
%e 6.480740698407860230965967436087996657705204307058346549711354397809617....
%t RealDigits[N[Sqrt[42],200]][[1]] (* _Vladimir Joseph Stephan Orlovsky_, Feb 24 2011 *)
%o (PARI) default(realprecision, 20080); x=sqrt(42); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010496.txt", n, " ", d)); \\ _Harry J. Smith_, Jun 05 2009
%Y Cf. A040035 (continued fraction).
%K nonn,cons
%O 1,1
%A _N. J. A. Sloane_