A122903 Numbers n such that in Z/nZ the number of squares is equal to the number of invertible elements.

1, 3, 4, 12, 70, 90, 210

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