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A069052
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Denominator of Sum_{i = 1..n} 1/i^5.
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9
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1, 32, 7776, 248832, 777600000, 259200000, 4356374400000, 139403980800000, 101625502003200000, 101625502003200000, 16366888723117363200000, 16366888723117363200000, 6076911214672415134617600000
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OFFSET
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1,2
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COMMENTS
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If 1 <= n <= 19, a(n) = A007480(n) * A002805(n) = denominator(Sum_{i = 1..n} 1/i^4) * denominator(Sum_{i = 1..n} 1/i).
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LINKS
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FORMULA
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EXAMPLE
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MATHEMATICA
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Denominator[Table[Sum[1/i^5, {i, n}], {n, 20}]] (* Alonso del Arte, May 10 2020 *)
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CROSSREFS
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KEYWORD
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easy,frac,nonn
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AUTHOR
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STATUS
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approved
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