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rodrigovidal/gist:1349695

Created November 8, 2011 23:30
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Euler 2
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gistfile1.fs
let fibonacci =
(0, 1)
|> Seq.unfold(fun (current, next) -> Some(current, (next, current + next)))
|> Seq.takeWhile(fun x -> x <= 4000000)
|> Seq.filter(fun x -> x % 2 = 0)
|> Seq.sum
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