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A134175
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a(n) = (32/2)*(n-1)*(n-2)*(n-3)*(n-4).
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1
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0, 0, 0, 0, 384, 1920, 5760, 13440, 26880, 48384, 80640, 126720, 190080, 274560, 384384, 524160, 698880, 913920, 1175040, 1488384, 1860480, 2298240, 2808960, 3400320, 4080384, 4857600, 5740800, 6739200, 7862400, 9120384, 10523520, 12082560, 13808640, 15713280
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OFFSET
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1,5
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LINKS
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FORMULA
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MATHEMATICA
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LinearRecurrence[{5, -10, 10, -5, 1}, {0, 0, 0, 0, 384} , 50] (* or *) Table[(32/2)*(n-1)*(n-2)*(n-3)*(n-4), {n, 1, 50}] (* G. C. Greubel, May 30 2016 *)
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PROG
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(PARI) a(n) = 16*(n-1)*(n-2)*(n-3)*(n-4) \\ Michel Marcus, Jun 27 2013
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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