id:A117638 - OEIS Search Results

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Numbers n for which the digital root of phi(n) divides n.

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1, 2, 4, 6, 8, 11, 12, 16, 18, 21, 22, 24, 27, 29, 36, 42, 44, 47, 50, 54, 58, 63, 66, 72, 78, 80, 81, 83, 84, 85, 88, 90, 94, 100, 101, 105, 108, 116, 117, 120, 125, 126, 128, 129, 132, 135, 136, 137, 144, 147, 156, 160, 162, 166, 168, 170, 171, 173, 174, 176, 180 (list; graph; listen)

	OFFSET	`0,2`
	EXAMPLE	`105 is in the sequence because phi(105)=48 and the digital root of 48 (3) divides 105`
	CROSSREFS	`Cf. A000010.` `Sequence in context: A134244 A073140 A081499 this_sequence A128403 A004401 A051244` `Adjacent sequences: A117635 A117636 A117637 this_sequence A117639 A117640 A117641`
	KEYWORD	`nonn,base`
	AUTHOR	`Luc Stevens (lms022(AT)yahoo.com), Apr 09 2006`

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Last modified December 9 14:43 EST 2009. Contains 170430 sequences.

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