a(n) = 11^n - n^10.

Terms

a(0) =1a(1) =10a(2) =-903a(3) =-57718a(4) =-1033935a(5) =-9604574a(6) =-58694615a(7) =-262988078a(8) =-859382943a(9) =-1128836710a(10) =15937424601a(11) =259374246010