login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A056012
Numbers n such that n | Sigma(n) + d(n) + Phi(n).
0
1, 2, 4, 6, 90, 408, 5856, 2200352, 11524640, 90200997888
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..10.
MATHEMATICA
Do[If[Mod[DivisorSigma[1, n]+DivisorSigma[0, n]+EulerPhi[n], n]==0, Print[n]], {n, 1, 10^7}]
CROSSREFS
Sequence in context:
A009257
A098757
A335709
*
A259050
A066719
A345269
Adjacent sequences:
A056009
A056010
A056011
*
A056013
A056014
A056015
KEYWORD
nonn
AUTHOR
Robert G. Wilson v
, Jul 24 2000
EXTENSIONS
a(7) corrected and a(10) added by
Donovan Johnson
, Nov 12 2012
STATUS
approved
Lookup
|
Welcome
|
Wiki
|
Register
|
Music
|
Plot 2
|
Demos
|
Index
|
Browse
|
More
|
WebCam
Contribute new seq. or comment
|
Format
|
Style Sheet
|
Transforms
|
Superseeker
|
Recents
The OEIS Community
| Maintained by
The OEIS Foundation Inc.
License Agreements, Terms of Use, Privacy Policy.
.
Last modified September 14 12:31 EDT 2024. Contains 375921 sequences. (Running on oeis4.)