id:A069069 - OEIS Search Results

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Numbers n such that n*phi(n-1) is a perfect square.

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9, 27, 45, 49, 64, 486, 637, 867, 961, 1035, 1352, 1408, 1521, 3971, 4913, 7581, 8750, 12936, 14283, 19602, 20825, 23104, 36481, 43681, 44506, 48600, 49005, 58621, 63001, 72897, 75843, 85697, 90168, 97470, 108241, 122317, 127008 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Adjacent sequences: A069066 A069067 A069068 this_sequence A069070 A069071 A069072` `Sequence in context: A116455 A103753 A103965 this_sequence A031088 A020156 A062231`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 05 2002`

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Last modified October 5 16:50 EDT 2008. Contains 144613 sequences.

AT&T Labs Research