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A082954 Numbers n such that phi(n*sigma(n))=phi(n)^2. 0
1, 3, 39, 111, 175, 183, 219, 333, 459, 471, 549, 579, 657, 831, 939, 969, 1191, 1263, 1371, 1413, 1443, 1623, 1737, 1839, 1983, 2019, 2199, 2271, 2379, 2493, 2631, 2817, 2847, 2907, 2991, 3279, 3459, 3573, 3603, 3639, 3711, 3789, 3963, 4113, 4131, 4143 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A183182 A134106 A153875 * A050392 A191468 A203243

Adjacent sequences:  A082951 A082952 A082953 * A082955 A082956 A082957

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), May 26 2003

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Last modified February 15 07:22 EST 2012. Contains 205706 sequences.