OFFSET
1,1
COMMENTS
LINKS
Jianing Song, Table of n, a(n) for n = 1..145
Wikipedia, Multiplicative group of integers modulo n
EXAMPLE
252 is a term because there is no other k such that (Z/kZ)* = (Z/252Z)* = C_2 X C_6 X C_6.
324 is a term because there is no other k such that (Z/kZ)* = (Z/324Z)* = C_2 X C_54.
2052 is a term because there is no other k such that (Z/kZ)* = (Z/2052Z)* = C_2 X C_18 X C_18.
PROG
(PARI) isA372755(n) = (n % 8 == 4) && isA319928(n)
CROSSREFS
KEYWORD
nonn
AUTHOR
Jianing Song, May 12 2024
STATUS
approved