_0     \end{array}     \right|=0,     \quad     \left|     \begin{array}{ccc}     D_0 & D_0 & D_0     \\     D_0 & D_0 & D_0     \\     D_0 & D_0 & D_0     \end{array}     \right|=0,     \dots     \quad\text{for}\quad n=0,0,0,\dots