Congruences concerning generalized central trinomial coefficients

Jia-Yu Chen, Chen Wang

For any $n\in \mathbb{N}=\{0,1,2,\dots \}$ and $b,c\in \mathbb{Z}$, the generalized central trinomial coefficient $T_n(b,c)$ denotes the coefficient of $x^n$ in the expansion of $(x^…