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A081237
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Numbers n with no k, 0<k<n, such that mu(n-k)=mu(n)=mu(n+k), where mu=A008683 (Moebius function).
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1
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OFFSET
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1,2
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COMMENTS
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Conjecture: there are no more terms.
Next term, if one exists, exceeds 10000000000. [From Sean A. Irvine, Sep 08 2009]
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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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