143280358783domain: NAppears in sequencesNumber of n X 4 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or vertically.at n=6A232364Number of nX7 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or vertically.at n=3A232367