A026489 a(n) = least positive integer > a(n-1) and not a(i)*a(j)+a(k) for 1<=i<j<k<=n.

1, 2, 3, 4, 8, 9, 18, 19, 29, 39, 40, 60, 70, 80, 81, 95, 123, 143, 144, 154, 164, 169, 174, 189, 217, 248, 258, 268, 273, 278