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Let $Q_n(z)$ be the polynomials associated with the Nekrasov-Okounkov formula$$\sum_{n\geq 1} Q_n(z) q^n := \prod_{m = 1}^\infty (1 - q^m)^{-z - 1}.$$ Inthis paper we partially answer a conjecture of Heim and Neuhauser, which asksif $Q_n(z)$ is unimodal, or stronger, log-concave for all $n \geq 1$. Through anew recursive formula, we show that if $A_{n,k}$ is the coefficient of $z^k$ in$Q_n(z)$, then $A_{n,k}$ is log-concave in $k$ for $k \ll n^{1/6}/\log n$ andmonotonically decreasing for $k \gg \sqrt{n}\log n$. We also propose aconjecture that can potentially close the gap.

Towards Heim and Neuhauser's Unimodality Conjecture on the Nekrasov-Okounkov polynomials