a(n) = floor(sqrt(3)*10^n).

Terms

a(0) =1a(1) =17a(2) =173a(3) =1732a(4) =17320a(5) =173205a(6) =1732050a(7) =17320508a(8) =173205080a(9) =1732050807a(10) =17320508075a(11) =173205080756