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A015834 phi(n) | sigma(n + 1). 0
2, 4, 5, 6, 9, 10, 13, 14, 20, 21, 30, 32, 34, 43, 45, 54, 55, 65, 68, 70, 104, 109, 114, 129, 132, 140, 151, 153, 160, 176, 183, 203, 234, 245, 252, 279, 314, 340, 370, 407, 434, 441, 539, 550, 580, 589, 620, 635, 644, 741, 765, 798, 806, 845, 860 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

CROSSREFS

Sequence in context: A062861 A120629 A169694 * A050011 A030303 A047315

Adjacent sequences:  A015831 A015832 A015833 * A015835 A015836 A015837

KEYWORD

nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com)

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Last modified February 17 20:50 EST 2012. Contains 206085 sequences.