a(n) = 10*a(n-1)+n^3, a(0)=0.

Terms

a(0) =0a(1) =1a(2) =18a(3) =207a(4) =2134a(5) =21465a(6) =214866a(7) =2149003a(8) =21490542a(9) =214906149a(10) =2149062490a(11) =21490626231a(12) =214906264038