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A054614 a(n) = Sum_{d|n} phi(d)*7^(n/d). 1
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; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..19.

CROSSREFS

Column k=7 of A185651.

Sequence in context: A180287 A082140 A264693 * A270240 A104896 A246939

Adjacent sequences:  A054611 A054612 A054613 * A054615 A054616 A054617

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 16 2000

STATUS

approved

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Last modified August 25 05:19 EDT 2019. Contains 326318 sequences. (Running on oeis4.)