In the framework of the single-electron tight-binding Hamiltonian, we numerically calculate the electronic spectrum, integrated density of states, and investigate the localization of the electronic states by the use of the generalized first moment, generalized second moment, and the inverse paticipation ratio. It is found that there is no normal degenerate states, and only accidentally degenerate states. Furthermore, all of the states are intermediate ones, there is not any extended state or localized state.
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