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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A075775 Numbers n such that n divides phi(F(n)) where F(n) denotes the n-th Fibonacci number. 0
1, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 58, 60, 62, 63, 64, 65, 66, 67, 68, 69, 70, 72, 73, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 88, 89, 90, 91, 92, 93 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..69.

MATHEMATICA

Select[Range[100], Divisible[EulerPhi[Fibonacci[#]], #]&] (* Harvey P. Dale, Jun 11 2015 *)

CROSSREFS

Cf. A065449.

Sequence in context: A108584 A098605 A126802 * A262393 A031089 A110186

Adjacent sequences:  A075772 A075773 A075774 * A075776 A075777 A075778

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre, Oct 09 2002

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 17 17:08 EDT 2019. Contains 326059 sequences. (Running on oeis4.)