275272domain: NAppears in sequencesNumber of 8-step one space for components leftwards or up, two space for components rightwards or down asymmetric quasi-bishop's tours (antidiagonal moves become knight moves) on an n X n board summed over all starting positions.at n=12A187612a(n) = 344*7^n/21 - 128/3 (n>=1).at n=4A304828