63568729domain: NAppears in sequencesNumber of 6Xn 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically.at n=11A207952Number of 4 X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with every occupancy equal to zero or two.at n=11A221382