2403848151domain: NAppears in sequencesNumber of nX3 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, vertically, diagonally or antidiagonally.at n=6A232454Number of nX7 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally, vertically, diagonally or antidiagonally.at n=2A232458