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A070324 Max( sigma(k) : k=1,2,3,...,n ). 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..65.

FORMULA

lim n -> infinity (1/n^2)*sum(i=1, n, a(i))=C=1, 2...

PROG

(PARI) a(n)=vecmax(vector(n, k, sigma(k)))

CROSSREFS

Sequence in context: A261368 A307743 A257007 * A054155 A054058 A056007

Adjacent sequences:  A070321 A070322 A070323 * A070325 A070326 A070327

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre, May 11 2002

STATUS

approved

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Last modified February 27 04:09 EST 2020. Contains 332299 sequences. (Running on oeis4.)