id:A069797 - OEIS Search Results

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Smallest k>n such that phi(n) divides phi(k).

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2, 3, 4, 5, 8, 7, 9, 10, 13, 12, 22, 13, 21, 18, 16, 17, 32, 19, 27, 24, 26, 25, 46, 30, 33, 28, 37, 35, 58, 32, 61, 34, 41, 40, 39, 37, 57, 54, 45, 48, 55, 45, 49, 50, 52, 67, 94, 51, 86, 55, 64, 56, 106, 57, 75, 65, 63, 87, 118, 64, 77, 77, 73, 68, 97, 75, 134, 80, 89, 72 (list; graph; listen)

	OFFSET	`1,1`
	PROGRAM	`(PARI) for(s=1, 80, n=s+1; while(frac(eulerphi(n)/eulerphi(s))>0, n++); print1(n, ", "); )`
	CROSSREFS	`Sequence in context: A094607 A098098 A080785 this_sequence A091893 A074756 A075162` `Adjacent sequences: A069794 A069795 A069796 this_sequence A069798 A069799 A069800`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), May 01 2002`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research