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Search: id:A119526
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| A119526 |
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Odd denominators of n * n-th harmonic number = A027611[2^n]. |
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+0
2
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| 1, 1, 3, 35, 45045, 4512611027925, 2052546673789621992207225, 104326219460917277964091790659689347988584942875383375, 65134729714436885436168002936626505274493455112928327538888490982573786624726691\ 153873697518277375333357875
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OFFSET
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0,3
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FORMULA
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a(n) = Denominator[2^n*Sum[1/k,{k,1,2^n}]]. a(n) = A027611[2^n].
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MATHEMATICA
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Denominator[Table[2^n*Sum[1/k, {k, 1, 2^n}], {n, 0, 10}]]
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CROSSREFS
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Cf. A027611.
Sequence in context: A134098 A132513 A034174 this_sequence A112404 A158301 A105758
Adjacent sequences: A119523 A119524 A119525 this_sequence A119527 A119528 A119529
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KEYWORD
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frac,nonn
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AUTHOR
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Alexander Adamchuk (alex(AT)kolmogorov.com), Jul 27 2006
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