%I A040663
%S A040663 26,3,1,2,1,3,52,3,1,2,1,3,52,3,1,2,1,3,52,3,1,2,1,3,52,3,1,2,1,
%T A040663 3,52,3,1,2,1,3,52,3,1,2,1,3,52,3,1,2,1,3,52,3,1,2,1,3,52,3,1,2,
%U A040663 1,3,52,3,1,2,1,3,52,3,1,2,1,3,52,3,1,2,1,3,52,3,1,2,1,3,52,3,1
%N A040663 Continued fraction for sqrt(690).
%H A040663 <a href="Sindx_Con.html#confC">Index entries for continued fractions 
               for constants</a>
%F A040663 a(n)=(1/90)*{-673*(n mod 6)+32*[(n+1) mod 6]+77*[(n+2) mod 6]+47*[(n+3) 
               mod 6]+92*[(n+4) mod 6]+797*[(n+5) mod 6]}-26*[C(2*n,n) mod 2], with 
               n>=0 [From Paolo P. Lava (ppl(AT)spl.at), May 18 2009]
%p A040663 with(numtheory): Digits := 300: convert(evalf(sqrt(690)),confrac);
%Y A040663 Sequence in context: A037929 A036167 A040675 this_sequence A040664 A040665 
               A040666
%Y A040663 Adjacent sequences: A040660 A040661 A040662 this_sequence A040664 A040665 
               A040666
%K A040663 nonn,cofr,easy
%O A040663 0,1
%A A040663 N. J. A. Sloane (njas(AT)research.att.com).