Number of n X 4 0..4 arrays with every nonzero element less than or equal to some NW, E or S neighbor.

A203546

Number of n X 4 0..4 arrays with every nonzero element less than or equal to some NW, E or S neighbor.

Terms

    a(0) =1a(1) =4773a(2) =1525965a(3) =276550270a(4) =48904258294

External references