5654616domain: NAppears in sequencesNumber of n X 4 0..1 arrays with every one equal to some NW, E or S neighbor.at n=6A202902Number of n X 7 0..1 arrays with every one equal to some NW, E or S neighbor.at n=3A202905T(n,k) = Number of n X k 0..1 arrays with every one equal to some NW, E or S neighbor.at n=48A202906