a(n) = 9*11^n + 1.

Terms

a(0) =10a(1) =100a(2) =1090a(3) =11980a(4) =131770a(5) =1449460a(6) =15944050a(7) =175384540a(8) =1929229930a(9) =21221529220a(10) =233436821410