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A054482
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Denominator of lowest terms fraction from division of a highly composite number (1) by its predecessor.
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4
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1, 1, 2, 1, 1, 2, 3, 4, 1, 2, 3, 2, 1, 6, 2, 3, 2, 1, 2, 3, 2, 3, 4, 10, 11, 9, 10, 2, 3, 2, 3, 4, 5, 2, 9, 5, 12, 2, 3, 2, 3, 4, 5, 2, 9, 5, 4, 3, 5, 4, 2, 15, 17, 12, 5, 2, 9, 5, 4, 3, 5, 4, 2, 15, 19, 2, 15, 2, 19, 18, 5, 4, 3, 5, 4, 2, 3, 2, 3, 2, 6, 35, 92, 21, 23, 35, 92, 21, 2, 23, 21, 2
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OFFSET
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2,3
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COMMENTS
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Successive fractions are 2/1,2/1,3/2,2/1,2/1,3/2,4/3,5/4,2/1,3/2,4/3,3/2,2/1 a(n) is frequently A054483(n)-1, though not for example for n=26.
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LINKS
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FORMULA
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EXAMPLE
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a(7)=2 since A002182(7)=36, A002182(6)=24 and 36/24=3/2 in lowest terms.
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MATHEMATICA
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s = Import["https://oeis.org/A002182/b002182.txt", "Data"][[All, -1]]; Array[Denominator[s[[# + 1]]/s[[#]]] &, 120] ] (* Michael De Vlieger, Oct 11 2023 *)
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CROSSREFS
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KEYWORD
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easy,nonn,frac
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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