Number of n X 3 0..5 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

A203052

Number of n X 3 0..5 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor.

Terms

    a(0) =36a(1) =7820a(2) =1055370a(3) =125838722a(4) =15517802234

External references