A033854 - OEIS

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A033854

Numbers n such that j(n)*ud(n)=phi(n), j(n) = A033831, ud(n) = number of unitary divisors of n (A034444).

3, 4, 8, 15, 20, 28, 40, 102, 132, 140, 252, 360, 510, 780 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	CROSSREFS	`Sequence in context: A026632 A026654 A104370 * A042981 A007486 A027977` `Adjacent sequences: A033851 A033852 A033853 * A033855 A033856 A033857`
	KEYWORD	`easy,nonn`
	AUTHOR	`Naohiro Nomoto ( 6284968128(AT)geocities.co.jp)`

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Last modified February 14 11:36 EST 2012. Contains 205623 sequences.