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A130492
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a(n) = denominator of Sum_{k=1..n} k^mu(n+1-k), where mu(m) = A008683(m).
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3
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1, 1, 2, 6, 12, 20, 10, 84, 840, 72, 630, 1320, 2772, 1560, 90090, 42, 240240, 1904, 46410, 95760, 639540, 5040, 9699690, 637560, 14316120, 92400, 176125950, 308880, 20078358300, 475020, 33845175, 7447440, 116925953760, 110880, 501401225325
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OFFSET
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1,3
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COMMENTS
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Numerator of Sum_{k=1..n} k^mu(n+1-k) is A130491(n).
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LINKS
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MAPLE
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CROSSREFS
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KEYWORD
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frac,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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