On the average hitting times of Cay($Z_N,\{+1,+2\}$)

The exact formula for the average hitting time (HT, as an abbreviation) of simple random walks on Cay($Z_N,\{\pm 1,\pm 2\}$) was given by Y. Doi et al. [Discrete Applied Mathematics,313 (2022) 18-28]. Y. Doi et al. give a simple formula for the HT’s of simple random walks on Cay($Z_N,\{\pm 1,\pm 2\}$) by using an elementary method. In this paper, using an elementary method also used by Y. Doi et al. [3], we give a simple formula for HT’s of simple random walks on Cay($Z_N,\{+1,+2\}$).