Number of nX7 0..2 arrays with every 1 immediately preceded by 0 to the left or above, and every 2 immediately preceded by both a 1 and a 0.

A203370

Number of nX7 0..2 arrays with every 1 immediately preceded by 0 to the left or above, and every 2 immediately preceded by both a 1 and a 0.

Terms

    a(0) =21a(1) =4998a(2) =636912a(3) =93584344a(4) =13204707603

External references