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A070324
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Max( sigma(k) : k=1,2,3,...,n ).
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1
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1, 3, 4, 7, 7, 12, 12, 15, 15, 18, 18, 28, 28, 28, 28, 31, 31, 39, 39, 42, 42, 42, 42, 60, 60, 60, 60, 60, 60, 72, 72, 72, 72, 72, 72, 91, 91, 91, 91, 91, 91, 96, 96, 96, 96, 96, 96, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 168, 168, 168, 168, 168, 168
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OFFSET
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1,2
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COMMENTS
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Records give A034885. Where records occur gives A002093. - Omar E. Pol, Apr 23 2020
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LINKS
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Table of n, a(n) for n=1..65.
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FORMULA
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lim n -> infinity (1/n^2)*sum(i=1, n, a(i))=C=1, 2...
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PROG
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(PARI) a(n)=vecmax(vector(n, k, sigma(k)))
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CROSSREFS
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Cf. A000203, A002093, A034885.
Sequence in context: A261368 A307743 A257007 * A054155 A054058 A056007
Adjacent sequences: A070321 A070322 A070323 * A070325 A070326 A070327
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KEYWORD
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easy,nonn
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AUTHOR
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Benoit Cloitre, May 11 2002
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STATUS
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approved
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