OFFSET
1,2
COMMENTS
a(1) = 1 and all other terms are composite, of course.
MATHEMATICA
Select[DivisorSigma[0, Range[200]], !PrimeQ[#]&] (* Harvey P. Dale, Mar 20 2015 *)
PROG
(PARI) for(i=1, 200, if(!isprime(numdiv(i)), print1(numdiv(i)", "))) \\ Franklin T. Adams-Watters, Apr 09 2009
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Jun 16 2008
EXTENSIONS
More terms from Franklin T. Adams-Watters, Apr 09 2009
STATUS
approved