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Search: id:A130088
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| A130088 |
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a(n) = numerator of product{k=1 to n} k^mu(n+1-k), where mu(k) = A008683(k). |
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+0
4
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| 1, 2, 3, 2, 5, 3, 7, 1, 3, 25, 22, 21, 104, 21, 20, 11, 408, 585, 380, 55, 6272, 2431, 14904, 95, 176000, 25857, 1008, 149891, 356352, 10625, 510136, 35397, 7904, 224315, 35280, 776457, 118513664, 8265, 135200, 5425, 143972204544, 108150889
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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Leroy Quet, Home Page (listed in lieu of email address)
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EXAMPLE
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a(5)=numer(1^(-1)*2^(0)*3^(-1)*4^(-1)*5^(1))=denom(5/12)=5.
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MAPLE
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with(numtheory): a:=n->numer(mul(k^mobius(n+1-k), k=1..n)): seq(a(n), n=1..50); - Emeric Deutsch (deutsch(AT)duke.poly.edu), May 09 2007
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CROSSREFS
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Cf. A130086, A130087, A130089.
Sequence in context: A026235 A086281 A097975 this_sequence A078834 A039634 A078833
Adjacent sequences: A130085 A130086 A130087 this_sequence A130089 A130090 A130091
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KEYWORD
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frac,nonn
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AUTHOR
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Leroy Quet May 06 2007
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), May 09 2007
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