Largest n-digit number ending in n.

Terms

a(0) =1a(1) =92a(2) =993a(3) =9994a(4) =99995a(5) =999996a(6) =9999997a(7) =99999998a(8) =999999999a(9) =9999999910a(10) =99999999911a(11) =999999999912