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 A066932 a(n) is the denominator of b(n) where b(n)=1/b(n-1)+1/b(n-2) with b(1)=1 and b(2)=2. 3
 1, 1, 2, 6, 21, 224, 10848, 4843293, 98262557120, 989063619297120960, 197348115975871052843094930213, 380244324677612882673067751880150651746235378560 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS lim_{n->infty} b(n)=sqrt(2) with geometric convergence since abs(b(n)-sqrt(2))<2*2^(-n/2) LINKS FORMULA a(n+1)=A057677(n)*A057677(n-1) - Benoit Cloitre, Oct 25 2005 a(n) is the numerator of b(n) where b(n)=1/(b(n-1)+ b(n-2)) with b(1)=1 and b(2)=2 [From Mark Dols, Jul 17 2009] CROSSREFS Cf. A057677. Sequence in context: A182157 A110306 A028936 * A181754 A084392 A156155 Adjacent sequences:  A066929 A066930 A066931 * A066933 A066934 A066935 KEYWORD nonn,frac AUTHOR Zak Seidov, Oct 24 2002 EXTENSIONS Edited by Benoit Cloitre, Oct 25 2005 STATUS approved

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Last modified June 14 15:19 EDT 2021. Contains 345025 sequences. (Running on oeis4.)