Number of (n+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.

A250845

Number of (n+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) =100a(1) =2457a(2) =44797a(3) =626416a(4) =7134786a(5) =69543783a(6) =601566177a(7) =4741091128a(8) =34703305546a(9) =239290928999

External references