id:A116012 - OEIS Search Results

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n+sigma(n)+sigma(sigma(n)) is a fourth power.

+0
6

19, 1873, 147497, 792736 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`792736+sigma(792736)+sigma(sigma(792736))=56^4.`
	CROSSREFS	`Cf. A116013, A116014, A116015.` `Sequence in context: A054949 A068748 A098846 this_sequence A087353 A055415 A125197` `Adjacent sequences: A116009 A116010 A116011 this_sequence A116013 A116014 A116015`
	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.