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A074597
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Numerator of 3 * H(n,3,2), a generalized harmonic number. See A075135.
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2
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3, 21, 99, 1209, 9123, 164331, 34437, 823467, 11066355, 330317679, 1355321733, 990324351, 19205317149, 802205873349, 815985479709, 38957620226163, 197637723726063, 10617280487243739, 75264900895382073
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..19.
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MATHEMATICA
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Table[ Numerator[ Sum[1/i, {i, 2/3, n}]], {n, 1, 20}]
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CROSSREFS
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The denominators are in A051540.
Cf. A075135.
Sequence in context: A108970 A069017 A144883 * A076207 A134057 A128281
Adjacent sequences: A074594 A074595 A074596 * A074598 A074599 A074600
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KEYWORD
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easy,frac,nonn
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AUTHOR
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Robert G. Wilson v, Aug 27 2002
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STATUS
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approved
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