OFFSET
1,2
COMMENTS
The terms 70 and 90 show that sequence is strictly different from A042965. - Andrew S. Plewe, Jun 13 2007
LINKS
Ivan Neretin, Table of n, a(n) for n = 1..10000
FORMULA
MATHEMATICA
Select[Range@94, Length@Union@Mod[Range[#]^2, #] <= EulerPhi[#] &] (* Ivan Neretin, Dec 14 2016 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Max Alekseyev, Sep 18 2006
STATUS
approved