Using the representation of Fibonacci number as a sum of multinomial coefficients over partitions with odd parts, we obtain several infinite families of double
inequalities involving the generating function of the number of partitions with
odd parts, the generating function for the number of odd divisors and the generating function of the number of partitions in two distinct odd parts. We note
that when the problem of finding a closed form for the generating function of
Qk
(n) for arbitrary k will be solved, then further, stronger inequality families
will follow by the methods used in this article