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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Juggler-sequence/F-Sharp/juggler-sequence.fs Normal file
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// Juggler sequence. Nigel Galloway: August 19th., 2021
let J n=Seq.unfold(fun(n,i,g,l)->if n=1I then None else let e=match n.IsEven with true->Isqrt n |_->Isqrt(n**3) in Some((i,g,l),if e>i then (e,e,l+1,l+1) else (e,i,g,l+1)))(n,n,0,0)|>Seq.last
printfn " n l[n] i[n] h[n]\n___________________"; [20I..39I]|>Seq.iter(fun n->let i,g,l=J n in printfn $"%d{int n}%5d{l+1}%5d{g} %A{i}")
printfn " n l[n] i[n] d[n]\n________________________"; [113I;173I;193I;2183I;11229I;15065I;15845I;30817I]|>Seq.iter(fun n->let i,g,l=J n in printfn $"%8d{int n}%5d{l+1}%5d{g} %d{(bigint.Log10>>int>>(+)1) i}")