Search: id:A132592
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%I A132592
%S A132592 0,8,288,9800,332928,11309768,384199200,13051463048,443365544448,
%T A132592 15061377048200,511643454094368,17380816062160328,590436102659356800,
%U A132592 20057446674355970888,681362750825443653408,23146276081390728245000
%N A132592 Sequence allows us to find X values of the equation: X(X + 1) - 8*Y^2 
               = 0.
%F A132592 a(0)=0, a(1)=8 and a(n)=34*a(n-1) - a(n-2) + 16.
%F A132592 a(n)=-(1/2)+(1/4)*[17-12*sqrt(2)]^n+(1/4)*[17+12*sqrt(2)]^n, with n>=0 
               [From Paolo P. Lava (ppl(AT)spl.at), Oct 07 2008]
%F A132592 a(n) = (A056771(n) - 1)/2 [From Max Alekseyev (maxale(AT)gmail.com), 
               Nov 13 2009]
%Y A132592 Cf. A007654.
%Y A132592 Sequence in context: A060355 A060859 A054607 this_sequence A034977 A065141 
               A000842
%Y A132592 Adjacent sequences: A132589 A132590 A132591 this_sequence A132593 A132594 
               A132595
%K A132592 nonn,new
%O A132592 0,2
%A A132592 Mohamed Bouhamida (bhmd95(AT)yahoo.fr), Nov 14 2007
%E A132592 More terms from Max Alekseyev (maxale(AT)gmail.com), Nov 13 2009

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