login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A122903 Numbers n such that in Z/nZ the number of squares is equal to the number of invertible elements. 4
1, 3, 4, 12, 70, 90, 210 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..7.

FORMULA

n such that A000224(n) = A000010(n)

CROSSREFS

Cf. A122904, A122905, A122906, A122907.

Sequence in context: A052626 A336687 A298115 * A059792 A018930 A127689

Adjacent sequences:  A122900 A122901 A122902 * A122904 A122905 A122906

KEYWORD

fini,full,nonn

AUTHOR

Max Alekseyev, Sep 18 2006

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 October 3 10:58 EDT 2022. Contains 357231 sequences. (Running on oeis4.)