A114908 a(n) is the largest base-6 string such that the n-th number coprime to 6 does not divide any substring of a(n).
4444, 545421, 5555521412, 555555514322, 5555555551435323, 555555553453434223, 5555555551222222222314, 555545555455554555545555, 5555555555555441321122544214, 555554544444352442424321331153
Offset: 2
Examples
a(3) = 545421 (base 6) because the 3rd number coprime to 6 is 7, and 7 does not divide any substring of a(3).