id:A116043 - OEIS Search Results

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n+phi(n)+phi(phi(n)) is a square.

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4

2, 6, 10, 11, 22, 24, 40, 62, 73, 88, 93, 96, 97, 105, 116, 127, 157, 160, 188, 228, 229, 237, 248, 292, 293, 301, 332, 352, 384, 401, 449, 464, 484, 541, 580, 640, 752, 837, 912, 945, 992, 1033, 1168, 1297, 1328, 1408, 1477, 1536, 1697, 1785, 1856, 1881 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`401+phi(401)+phi(phi(401)) = 961 = 31^2.`
	CROSSREFS	`Cf. A116040, A116041, A116042.` `Sequence in context: A050425 A030405 A125241 this_sequence A085258 A133520 A099017` `Adjacent sequences: A116040 A116041 A116042 this_sequence A116044 A116045 A116046`
	KEYWORD	`nonn`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), Feb 13 2006`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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