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A351072
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a(n) is the number of prime(1+n)-smooth numbers larger than one whose k-th arithmetic derivative is zero for some k.
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3
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OFFSET
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0,2
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COMMENTS
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See comments in A351071 about extending this sequence.
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LINKS
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FORMULA
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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STATUS
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approved
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