-1977326742domain: ZAppears in sequencesa(n) = 1 - n^11.at n=7A024009a(n) = Sum_{d|n, d==1 (mod 4)} d^11 - Sum_{d|n, d==3 (mod 4)} d^11.at n=6A321827a(n) = Sum_{d|n, d==1 (mod 4)} d^11 - Sum_{d|n, d==3 (mod 4)} d^11.at n=13A321827