%I
%S 1,2,3,4,6,18,12,24,36,108,72,144,216,648,432,864,1296,3888,2592,5184,
%T 7776,23328,15552,31104,46656,139968,93312,186624,279936,839808,
%U 559872,1119744,1679616,5038848,3359232,6718464,10077696,30233088
%N For n>3, a(n) = smallest number divisible by exactly n2 previous terms; a(n)=n for n<=3.
%C Values are 3smooth (A003586).
%F G.f. [x * (6x^66x^54x^33x^22x1)]/(16x^4) (conjectured).  _Ralf Stephan_, Feb 03 2004
%K nonn
%O 1,2
%A _Amarnath Murthy_, May 30 2003
%E More terms from _Reinhard Zumkeller_, Jun 02 2003
