Motzkin numbers: Difference between revisions
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=={{header|F_Sharp|F#}}== |
=={{header|F_Sharp|F#}}== |
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<lang fsharp> |
<lang fsharp> |
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// Motzkin numbers. Nigel Galloway: September 10th., 2021 |
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let M=let rec fN g=seq{yield List.item 1 g; yield! fN(0L::(g|>List.windowed 3|>List.map(List.sum))@[0L;0L])} in fN [0L;1L;0L;0L] |
let M=let rec fN g=seq{yield List.item 1 g; yield! fN(0L::(g|>List.windowed 3|>List.map(List.sum))@[0L;0L])} in fN [0L;1L;0L;0L] |
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M|>Seq.take 42|>Seq.iter(printfn "%d") |
M|>Seq.take 42|>Seq.iter(printfn "%d") |
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192137918101841817 |
192137918101841817 |
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</pre> |
</pre> |
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=={{header|Factor}}== |
=={{header|Factor}}== |
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{{works with|Factor|0.99 2021-06-02}} |
{{works with|Factor|0.99 2021-06-02}} |
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