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Search: id:A122903
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A122903 Numbers n such that in Z/nZ the number of squares is equal to the number of invertible elements. +0
5
1, 3, 4, 12, 70, 90, 210 (list; graph; listen)
OFFSET

1,2

FORMULA

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

CROSSREFS

Cf. A122904, A122905, A122906, A122907.

Sequence in context: A101716 A109771 A052626 this_sequence A059792 A018930 A127689

Adjacent sequences: A122900 A122901 A122902 this_sequence A122904 A122905 A122906

KEYWORD

fini,full,nonn

AUTHOR

Max Alekseyev (maxal(AT)cs.ucsd.edu), Sep 18 2006

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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