a(n) = floor(10^n*log(n)).

Terms

a(0) =0a(1) =69a(2) =1098a(3) =13862a(4) =160943a(5) =1791759a(6) =19459101a(7) =207944154a(8) =2197224577a(9) =23025850929a(10) =239789527279