%I A040811
%S A040811 28,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,
%T A040811 1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,
%U A040811 56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56,1,56
%N A040811 Continued fraction for sqrt(840).
%H A040811 <a href="Sindx_Con.html#confC">Index entries for continued fractions 
               for constants</a>
%F A040811 a(n)=(1/2)*[57+55*(-1)^n]-28*[C(2*n,n) mod 2], with n>=0 [From Paolo 
               P. Lava (ppl(AT)spl.at), May 29 2009]
%p A040811 with(numtheory): Digits := 300: convert(evalf(sqrt(840)),confrac);
%Y A040811 Sequence in context: A040808 A040809 A040810 this_sequence A051000 A132057 
               A040777
%Y A040811 Adjacent sequences: A040808 A040809 A040810 this_sequence A040812 A040813 
               A040814
%K A040811 nonn,cofr,easy
%O A040811 0,1
%A A040811 N. J. A. Sloane (njas(AT)research.att.com).