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A054614 Sum_{d|n} phi(d)*7^(n/d). 0
0, 7, 56, 357, 2464, 16835, 118104, 823585, 5767328, 40354335, 282492280, 1977326813, 13841410464, 96889010491, 678223896728, 4747561544985, 33232936339456, 232630513987319, 1628413638500376, 11398895185373269 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

CROSSREFS

Sequence in context: A055345 A180287 A082140 * A104896 A122996 A092315

Adjacent sequences:  A054611 A054612 A054613 * A054615 A054616 A054617

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Apr 16 2000

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Last modified February 14 23:04 EST 2012. Contains 205686 sequences.