id:A116050 - OEIS Search Results

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n+sigma(n)+sigma(sigma(n)) is a prime.

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	OFFSET	`1,2`
	EXAMPLE	`8 + sigma(8) + sigma(sigma(8)) = 47.`
	CROSSREFS	`Cf. A078762.` `Sequence in context: A140459 A139132 A022435 this_sequence A056721 A057479 A050140` `Adjacent sequences: A116047 A116048 A116049 this_sequence A116051 A116052 A116053`
	KEYWORD	`nonn`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 13 2006`

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

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