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A189102
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Greatest common divisor of n! and its arithmetic derivative.
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3
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1, 1, 1, 4, 4, 48, 48, 192, 1728, 34560, 34560, 414720, 414720, 2903040, 130636800, 2090188800, 2090188800, 25082265600, 25082265600, 501645312000, 31603654656000, 347640201216000, 347640201216000, 5562243219456000, 139056080486400000
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OFFSET
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1,4
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LINKS
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FORMULA
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EXAMPLE
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n = 5: 5! = 120, 120' = 244, gcd(120,244) = 4 -> a(5) = 4
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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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