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Search: id:A055196
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A055196 Numbers n such that n | Sigma(n)*Phi(n) and n is primitive. +0
1
6, 28, 40, 117, 135, 496, 775, 891, 1701, 2176, 5632, 6875, 8128, 18688, 23552, 26624, 44375, 88723, 89667, 91136, 274625, 352256, 557375, 628849, 722701, 796797 (list; graph; listen)
OFFSET

1,1
CROSSREFS

Cf. A011775.

Sequence in context: A083865 A117948 A071834 this_sequence A120624 A138873 A091307

Adjacent sequences: A055193 A055194 A055195 this_sequence A055197 A055198 A055199

KEYWORD

easy,nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Jun 30 2000

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

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