id:A069236 - OEIS Search Results

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n, not a not perfect square, such that the square-free part of n divides phi(n).

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8, 18, 27, 32, 50, 54, 72, 98, 108, 125, 128, 147, 162, 200, 216, 242, 243, 250, 288, 294, 338, 343, 392, 432, 450, 486, 500, 507, 512, 578, 588, 605, 648, 675, 686, 722, 800, 864, 882, 968, 972, 1000, 1014, 1029, 1058, 1083, 1125, 1152, 1176, 1210, 1250 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`108 is not a square, phi(108)=36, 3 is the square-free part of 108, and 3 divides 36. Hence a(9)=108 is in the sequence.`
	CROSSREFS	`Adjacent sequences: A069233 A069234 A069235 this_sequence A069237 A069238 A069239` `Sequence in context: A045043 A043881 A110188 this_sequence A051370 A011538 A043521`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 13 2002`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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