id:A115892 - OEIS Search Results

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Numbers n such that sigma(n) times phi(n) is a palindrome.

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1, 2, 3, 69, 219, 221, 224, 254, 1772, 2181, 15463, 50807, 63551, 94236, 161257, 602962, 2105689, 8371756 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`sigma(15463)phi(15463)=180561292=234222432.`
	CROSSREFS	`Cf. A084122, A115890, A115891.` `Adjacent sequences: A115889 A115890 A115891 this_sequence A115893 A115894 A115895` `Sequence in context: A108023 A041249 A132598 this_sequence A042233 A091825 A068185`
	KEYWORD	`nonn,base`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 06 2006`

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Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.