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A360607
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a(n) = (n + 1/3) * (3*n + 3)! / ((n + 1)!)^3.
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0
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2, 120, 3920, 115500, 3279276, 91483392, 2527462080, 69413752980, 1898945262500, 51809303385840, 1410778953118080, 38360293308573600, 1041896542898685600, 28274302212143040000, 766761376923703054080, 20781963787558897929060, 563007692048242597348500, 15246741943087253044446000
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OFFSET
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0,1
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LINKS
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MAPLE
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a := n -> (n + 1/3)*(3*n + 3)!/(n + 1)!^3: seq(a(n), n = 0..17);
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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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