login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A054617 a(n) = Sum_{d|n} phi(d)*10^(n/d). 3
0, 10, 110, 1020, 10120, 100040, 1001220, 10000060, 100010240, 1000002060, 10000100440, 100000000100, 1000001022240, 10000000000120, 100000010000660, 1000000000204080, 10000000100020480, 100000000000000160, 1000000001002002660 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Seiichi Manyama, Table of n, a(n) for n = 0..1000

FORMULA

Dirichlet convolution of A000010 and A011557. - R. J. Mathar, Jan 11 2013

CROSSREFS

Column k=10 of A185651.

Sequence in context: A290421 A113705 A283907 * A288982 A289767 A290207

Adjacent sequences:  A054614 A054615 A054616 * A054618 A054619 A054620

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Apr 16 2000

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 25 03:03 EDT 2019. Contains 326318 sequences. (Running on oeis4.)