512000262144domain: NAppears in sequencesa(n) = Sum_{0<d|n, n/d odd} d^9.at n=19A096962a(n) = Sum_{d|n, n/d==1 mod 4} d^9 - Sum_{d|n, n/d==3 mod 4} d^9.at n=19A321833Sum of the 9th powers of the divisor complements of the odd proper divisors of n.at n=19A352055