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A293707
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Permanent of a Hankel matrix with factorial elements.
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2
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2, 84, 137664, 14784353280, 159433923516825600, 247133428169618164285440000, 74871582187843476288006745227264000000, 5793842294883032778309293201687815335916339200000000, 145059336151890972759838967800541420103566785450351578316800000000000
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Table[Permanent[Table[(i + j)!, {i, 1, n}, {j, 1, n}]], {n, 1, 15}]
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PROG
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(PARI) {a(n) = matpermanent(matrix(n, n, i, j, (i+j)!))}
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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