A067883 - OEIS

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A067883

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

1, 2, 4, 6, 8, 12, 48, 60, 72, 96, 128, 240, 432, 480, 720, 1728, 2016, 6912, 10368, 14080, 32768, 142560, 184320, 196560, 712800, 1140480, 1190400, 1658880, 1801800, 3345408, 3571200, 5702400, 6220800, 8363520 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A059901 A136101 A086141 * A117117 A135109 A039846` `Adjacent sequences: A067880 A067881 A067882 * A067884 A067885 A067886`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 02 2002`
	EXTENSIONS	`More terms from Reiner Martin (reinermartin(AT)hotmail.com), Jul 09 2002`

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Last modified February 15 11:03 EST 2012. Contains 205763 sequences.