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%I #23 Dec 27 2023 00:39:53
%S 6,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,
%T 12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,2,12,
%U 2,12,2,12,2,12,2,12,2,12,2
%N Continued fraction for sqrt(42).
%H Harry J. Smith, <a href="/A040035/b040035.txt">Table of n, a(n) for n = 0..20000</a>
%H G. Xiao, <a href="http://wims.unice.fr/~wims/en_tool~number~contfrac.en.html">Contfrac</a>
%H <a href="/index/Con#confC">Index entries for continued fractions for constants</a>
%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (0, 1).
%e 6.4807406984078602309659674... = 6 + 1/(2 + 1/(12 + 1/(2 + 1/(12 + ...)))). - _Harry J. Smith_, Jun 05 2009
%p Digits := 100: convert(evalf(sqrt(N)),confrac,90,'cvgts'):
%t ContinuedFraction[Sqrt[42],300] (* _Vladimir Joseph Stephan Orlovsky_, Mar 06 2011 *)
%o (PARI) { allocatemem(932245000); default(realprecision, 29000); x=contfrac(sqrt(42)); for (n=0, 20000, write("b040035.txt", n, " ", x[n+1])); } \\ _Harry J. Smith_, Jun 05 2009
%Y Cf. A010496 Decimal expansion. - _Harry J. Smith_, Jun 05 2009
%K nonn,cofr,easy
%O 0,1
%A _N. J. A. Sloane_
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