Numbers in base 10 that are palindromic in bases 2, 4, and 16: Difference between revisions
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Catskill549 (talk | contribs) (added AWK) |
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=={{header|F_Sharp|F#}}== |
=={{header|F_Sharp|F#}}== |
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<lang fsharp> |
<lang fsharp> |
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// |
// Palindromic numbers in bases 2,4, and 16. Nigel Galloway: June 25th., 2021 |
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let fG n g=let rec fG n g=[yield n%g; if n>=g then yield! fG(n/g) g] in let n=fG n g in n=List.rev n |
let fG n g=let rec fG n g=[yield n%g; if n>=g then yield! fG(n/g) g] in let n=fG n g in n=List.rev n |
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Seq.initInfinite id|>Seq.takeWhile((>)25000)|>Seq.filter(fun g->fG g 16 && fG g 4 && fG g 2)|>Seq.iter(printf "%d "); printfn "" |
Seq.initInfinite id|>Seq.takeWhile((>)25000)|>Seq.filter(fun g->fG g 16 && fG g 4 && fG g 2)|>Seq.iter(printf "%d "); printfn "" |
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0 1 3 5 15 17 51 85 255 257 273 771 819 1285 1365 3855 4095 4097 4369 12291 13107 20485 21845 |
0 1 3 5 15 17 51 85 255 257 273 771 819 1285 1365 3855 4095 4097 4369 12291 13107 20485 21845 |
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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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