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A090762
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Numbers n which occur exactly 4 times in A001600.
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1
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OFFSET
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1,1
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REFERENCES
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T. Goto and S. Shibata, All numbers whose positive divisors have integral harmonic mean up to 300, Math. Comput. 73 (2004), 475-491.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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