id:A067884 - OEIS Search Results

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Numbers n such that n=phi(sigma(phi(sigma(phi(sigma(n)))))).

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1, 2, 8, 12, 16, 24, 30, 128, 240, 720, 1200, 1536, 1860, 6912, 15552, 15840, 18144, 32768, 67392, 83160, 92160, 142560, 272160, 290304, 290400, 712800, 1140480, 1190400, 3345408, 3571200, 5702400, 14859936, 29719872 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A108725 A108059 A139270 this_sequence A005880 A046470 A090772` `Adjacent sequences: A067881 A067882 A067883 this_sequence A067885 A067886 A067887`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 02 2002`
	EXTENSIONS	`More terms from Robert Gerbicz (gerbicz(AT)freemail.hu), Sep 05 2002`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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