id:A115919 - OEIS Search Results

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Numbers n such that sigma(n)-phi(n) is a prime number.

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	OFFSET	`1,1`
	EXAMPLE	`sigma(81)-phi(81)=67, a prime.`
	CROSSREFS	`Cf. A038344.` `Sequence in context: A000961 A128603 A096165 this_sequence A038701 A127072 A056781` `Adjacent sequences: A115916 A115917 A115918 this_sequence A115920 A115921 A115922`
	KEYWORD	`nonn`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 06 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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