a(n) is smallest number > a(n-1) of form a(i)*a(j), i < j < n.

Terms

a(0) =2a(1) =3a(2) =6a(3) =12a(4) =18a(5) =24a(6) =36a(7) =48a(8) =54a(9) =72a(10) =96a(11) =108a(12) =144a(13) =162a(14) =192a(15) =216a(16) =288a(17) =324a(18) =384a(19) =432a(20) =486a(21) =576a(22) =648a(23) =768a(24) =864a(25) =972a(26) =1152a(27) =1296a(28) =1458a(29) =1536