a(0)=0; a(n) = 11*a(n-1) + 11.

Terms

a(0) =0a(1) =11a(2) =132a(3) =1463a(4) =16104a(5) =177155a(6) =1948716a(7) =21435887a(8) =235794768a(9) =2593742459a(10) =28531167060a(11) =313842837671