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A007517 phi(n) * (sigma(n) - n). 0
0, 1, 2, 6, 4, 12, 6, 28, 24, 32, 10, 64, 12, 60, 72, 120, 16, 126, 18, 176, 132, 140, 22, 288, 120, 192, 234, 336, 28, 336, 30, 496, 300, 320, 312, 660, 36, 396, 408, 800, 40, 648, 42, 800, 792, 572, 46, 1216, 336, 860, 672, 1104, 52, 1188, 680 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

LINKS

Walter Nissen, Home Page (listed in lieu of email address)

CROSSREFS

Cf. A000010, A000203.

Sequence in context: A090546 A059909 A145177 * A072946 A134000 A127730

Adjacent sequences:  A007514 A007515 A007516 * A007518 A007519 A007520

KEYWORD

nonn

AUTHOR

Walter Nissen

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Last modified February 16 06:46 EST 2012. Contains 205867 sequences.