994050domain: NAppears in sequencesNumber of n X 3 1..3 arrays with no element with value z exactly a city block distance of z from another element with value z.at n=11A209369Number of 5Xn 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 0 1 vertically.at n=8A209652