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

Terms

a(0) =1a(1) =10a(2) =-1927a(3) =-175816a(4) =-4179663a(5) =-48667074a(6) =-361025495a(7) =-1957839572a(8) =-8375575711a(9) =-29023111918a(10) =-74062575399a(11) =0