a(n) = (10^n + 62)/9 for n>0.

Terms

a(0) =8a(1) =18a(2) =118a(3) =1118a(4) =11118a(5) =111118a(6) =1111118a(7) =11111118a(8) =111111118a(9) =1111111118a(10) =11111111118a(11) =111111111118