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A091751
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Alternating row sums of array A091747 (generalized Stirling2 array (7,2)).
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1
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1, 29, 2899, 625381, 235735025, 137662456849, 115219635641083, 130892567494940777, 193870813073375001313, 362981045220391075931461, 838251579579056365127865923, 2340586894706172958195272669517, 7772441664087128321443493161452817
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OFFSET
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1,2
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COMMENTS
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The first negative term is the 159 digit number a(43)=-2116278545846...33655549.
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LINKS
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FORMULA
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a(n)=sum(A091747(n, k)*(-1)^k, k=2..2*n), n>=1.
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CROSSREFS
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KEYWORD
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sign,easy
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AUTHOR
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STATUS
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approved
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