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A087280
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Solutions n of max(m+d(m))=n+2 for m<n; d(m) is the number of divisors of m.
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0
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OFFSET
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1,1
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COMMENTS
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It is not known if there are other terms. There are no more terms < 10^10.
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REFERENCES
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R. K. Guy, Unsolved Problems in Number Theory, section B8.
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LINKS
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EXAMPLE
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The largest value of m+d(m) for m < n=8 is 6+d(6)=10 = n+2, so 8 is in the sequence.
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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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