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A162991
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The first right hand column of triangle A162990.
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3
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4, 9, 64, 900, 20736, 705600, 33177600, 2057529600, 162570240000, 15933509222400, 1896219279360000, 269276305858560000, 44970736429301760000, 8724552309817344000000, 1945613940877311344640000
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internal format)
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OFFSET
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1,1
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LINKS
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FORMULA
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a(n) = ((n+1)!/n)^2 for n = 1, 2, 3, ... .
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MATHEMATICA
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Array[((#+1)!/#)^2 &, 20] (* Paolo Xausa, Mar 31 2024 *)
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CROSSREFS
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A001048(n) equals the square root of a(n).
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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