OFFSET
0,2
COMMENTS
EXAMPLE
a(3) = 1 * 4 * 24 * 192 = (1) * (1*4) * (1*4*6) * (1*4*6*8), since the first 4 composite numbers are (4, 6, 8) and the 0th compositorial is 1.
MATHEMATICA
nn=20; cnos=Complement[Range[nn], Prime[Range[PrimePi[nn]]]]; Rest[ FoldList[ Times, 1, Rest[FoldList[Times, 1, cnos]]]] (* Harvey P. Dale, Jun 28 2011 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Jonathan Vos Post, Jan 28 2011
STATUS
approved