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A122907 Numbers n such that in Z/nZ the number of squares is greater than or equal to the number of invertible elements. 4
1, 2, 3, 4, 6, 10, 12, 14, 18, 22, 26, 30, 34, 38, 42, 46, 50, 54, 58, 62, 66, 70, 74, 78, 82, 86, 90, 94, 98, 102, 106, 114, 118, 122, 134, 138, 142, 146, 150, 158, 162, 166, 174, 178, 186, 194, 202, 206, 210, 214, 218, 222, 226, 242, 246, 250, 254, 258, 262, 274 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..60.

FORMULA

n such that A000224(n) >= A000010(n). Union of A122903 and A122905. Complement of A122904 in positive integers.

CROSSREFS

Cf. A122903, A122904, A122905, A122906.

Sequence in context: A225649 A225651 A191149 * A070519 A177913 A098392

Adjacent sequences:  A122904 A122905 A122906 * A122908 A122909 A122910

KEYWORD

nonn

AUTHOR

Max Alekseyev, Sep 18 2006

STATUS

approved

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Last modified October 2 02:22 EDT 2014. Contains 247527 sequences.