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A203811
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Denominators of s(i) = s(i-1) - (1/i)*sign(s(i-1)) with s(1) = 1.
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6
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1, 2, 6, 12, 60, 20, 140, 280, 2520, 2520, 27720, 27720, 360360, 360360, 72072, 144144, 2450448, 2450448, 46558512, 232792560, 232792560, 232792560, 5354228880, 5354228880, 26771144400, 26771144400, 80313433200, 80313433200, 2329089562800, 2329089562800
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OFFSET
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1,2
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COMMENTS
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Numerators are given in A203810. The first 14 terms coincide with those of A002805.
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LINKS
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EXAMPLE
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MATHEMATICA
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nxt[{n_, a_}]:={n+1, a-1/(n+1) Sign[a]}; NestList[nxt, {1, 1}, 30][[All, 2]]//Denominator (* Harvey P. Dale, Jun 06 2021 *)
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CROSSREFS
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KEYWORD
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nonn,frac
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AUTHOR
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STATUS
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approved
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