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A285003
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a(n) = ceiling(Gamma(3n/4)).
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2
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2, 1, 2, 2, 5, 12, 36, 120, 454, 1872, 8377, 40320, 207359, 1133279, 6552135, 39916800, 255371836, 1710542069, 11964299313, 87178291200, 660355655454, 5189998453041, 42249866656928, 355687428096000, 3092228855290535, 27724322986333719, 256040133328476466
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OFFSET
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1,1
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COMMENTS
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There are three integer-valued interpolations between successive factorials.
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LINKS
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FORMULA
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a(n) = ceiling(Gamma(3n/4)).
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MAPLE
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MATHEMATICA
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Table[Ceiling[Gamma[3n/4]], {n, 1, 35}]
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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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