a(n) = 10*a(n-1)+n^2, a(0)=0.

A032343

a(n) = 10*a(n-1)+n^2, a(0)=0.

Terms

    a(0) =0a(1) =1a(2) =14a(3) =149a(4) =1506a(5) =15085a(6) =150886a(7) =1508909a(8) =15089154a(9) =150891621a(10) =1508916310a(11) =15089163221a(12) =150891632354

External references