  In this paper we obtain the closed forms of some hypergeometric functions. As
an application, we obtain the explicit forms of the Bergman kernel functions
for intersection of two complex ellipsoids $\{z \in \mathbb{C}^3 \colon |z_1|^p
+ |z_2|^q < 1, \quad |z_1|^p + |z_3|^r < 1\}$. We consider cases $p=6, q= r= 2$
and $p=q=r=2$. We also investigate the Lu Qi-Keng problem for $p=q=r=2$.
