OFFSET
1,1
COMMENTS
LINKS
Enrique Pérez Herrero, Table of n, a(n) for n = 1..10000
EXAMPLE
30 is in this sequence because omega(30)=3 does not divide phi(30)=8.
MATHEMATICA
Select[Range[2, 700], Mod[EulerPhi[#], PrimeNu[#]]!=0&] (* Harvey P. Dale, Dec 29 2019 *)
PROG
(PARI) isok(n) = (eulerphi(n) % omega(n) != 0) \\ Michel Marcus, Jun 12 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Enrique Pérez Herrero, Sep 04 2010
STATUS
approved