a(n) = A066557(n)/n.

Terms

a(0) =9a(1) =49a(2) =333a(3) =2499a(4) =19999a(5) =166666a(6) =1428571a(7) =12499999a(8) =111111111a(9) =999999999a(10) =9090909090a(11) =83333333333a(12) =769230769230