OFFSET
1,1
COMMENTS
LINKS
Jianing Song, Table of n, a(n) for n = 1..396 (all terms <= 20000)
Wikipedia, Multiplicative group of integers modulo n
EXAMPLE
(Z/24Z)* = C_2 X C_2 X C_2, and there is no other m such that (Z/mZ)* = C_2 X C_2 X C_2, so 24 is a term.
(Z/96Z)* = C_2 X C_2 X C_8, and there is no other m such that (Z/mZ)* = C_2 X C_2 X C_8, so 24 is a term.
PROG
CROSSREFS
KEYWORD
nonn
AUTHOR
Jianing Song, Oct 03 2018
STATUS
approved