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A163261
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Numerators of fractions in the approximation of the square root of 2 by means of: f(n)= 3f(n-1)/(f(n-1)^2+1); with f(1)= 1.
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1
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OFFSET
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1,2
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COMMENTS
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For root c: f(n) = (1+c)*f(n-1)/(f(n-1)^2+1).
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LINKS
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FORMULA
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PROG
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(PARI) f(n) = if (n==1, 1, 3*f(n-1)/(f(n-1)^2+1));
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CROSSREFS
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KEYWORD
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nonn,frac
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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