id:A084821 - OEIS Search Results

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Odd numbers m such that sigma(m) > m + phi(m), where sigma=A000203 is the divisor sum, and phi=A000010 the totient.

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15, 45, 63, 75, 105, 135, 165, 189, 195, 225, 231, 255, 273, 285, 297, 315, 345, 357, 375, 399, 405, 429, 435, 441, 465, 483, 495, 525, 555, 567, 585, 609, 615, 645, 651, 675, 693, 705, 735, 765, 777, 795, 819, 825, 855, 861, 885, 891, 903, 915, 945, 975 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Cf. A084820.` `Sequence in context: A027845 A029827 A119123 this_sequence A066763 A033849 A060536` `Adjacent sequences: A084818 A084819 A084820 this_sequence A084822 A084823 A084824`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Jun 04 2003`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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