id:A069579 - OEIS Search Results

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phi(core(n))=core(phi(n)) where core(x) is the square-free part of x; the smallest integer such that x*core(x) is a square.

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	OFFSET	`1,2`
	PROGRAM	`(PARI) for(n=1, 500, if(core(eulerphi(n))==eulerphi(core(n)), print1(n, ", ")))`
	CROSSREFS	`Sequence in context: A097757 A098740 A116046 this_sequence A065193 A116047 A061885` `Adjacent sequences: A069576 A069577 A069578 this_sequence A069580 A069581 A069582`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 18 2002`

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

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