a(n) = 11^n - n^8.

Terms

a(0) =1a(1) =10a(2) =-135a(3) =-5230a(4) =-50895a(5) =-229574a(6) =91945a(7) =13722370a(8) =197581665a(9) =2314900970a(10) =25837424601a(11) =285097311730