OFFSET
1,1
COMMENTS
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..1100
MAPLE
select(n -> n mod nops(numtheory:-factorset(n))^2 = 0, [$2..1000]); # Robert Israel, Apr 25 2017
MATHEMATICA
Select[Range[2, 500], Mod[#, PrimeNu[#]^2] == 0 &] (* G. C. Greubel, Apr 24 2017 *)
PROG
(PARI) isok(n) = !(n % omega(n)^2); \\ Michel Marcus, Apr 25 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 17 2013
STATUS
approved