a(n) = least positive integer > a(n-1) and not equal to a(i)*a(j)-2 for 1<=i<j<=n-1.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =6a(5) =7a(6) =9a(7) =11a(8) =14a(9) =15a(10) =17a(11) =18a(12) =21a(13) =22a(14) =23a(15) =24a(16) =27a(17) =29a(18) =30a(19) =35a(20) =36a(21) =37a(22) =38a(23) =39a(24) =41a(25) =45a(26) =47a(27) =48a(28) =50a(29) =51