First differences of 11^n (A001020).

Terms

a(0) =1a(1) =10a(2) =110a(3) =1210a(4) =13310a(5) =146410a(6) =1610510a(7) =17715610a(8) =194871710a(9) =2143588810a(10) =23579476910a(11) =259374246010