id:A074964 - OEIS Search Results

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Numbers n such that Max ( sigma(x*y) : 1<=x<=n, 1<=y<=n ) = sigma(n^2).

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1, 2, 3, 4, 6, 8, 12, 18, 24, 60 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Sequence is probably finite.`
	CROSSREFS	`Sequence in context: A074733 A001461 A048597 this_sequence A017822 A156082 A018465` `Adjacent sequences: A074961 A074962 A074963 this_sequence A074965 A074966 A074967`
	KEYWORD	`easy,more,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Oct 05 2002`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.