32855368domain: NAppears in sequencesNumber of n X n binary arrays with all ones connected only either two adjacent vertically or two adjacent horizontally.at n=7A145773Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,1,0,3,4 for x=0,1,2,3,4.at n=6A196435