Number of (4+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

A250711

Number of (4+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.

Terms

    a(0) =10050a(1) =160486a(2) =2003383a(3) =19962956a(4) =171212264a(5) =1307242006a(6) =9230232528a(7) =61126170276a(8) =387004301120

External references