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A259644
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Numerators of sum(1/A112373(k): k=0..n), denominators = A112373.
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2
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OFFSET
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0,2
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LINKS
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EXAMPLE
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Sum(1/A112373(k)) = 1, 2, 5/2, 31/12, 2419/936, 176795035/68408496, ...
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MATHEMATICA
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b[n_] := b[n] = If[n < 2, 1, (b[n-1]^3 + b[n-1]^2)/b[n-2]];
a[n_] := Sum[1/b[k], {k, 0, n}] // Numerator;
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PROG
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(Haskell)
import Data.Ratio (numerator)
a259644 n = a259644_list !! n
a259644_list = map numerator $
scanl1 (+) $ map (recip . fromIntegral) a112373_list
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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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STATUS
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approved
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