Number of (n+1)X(n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)-x(i-1,j) in the j direction.

A250520

Number of (n+1)X(n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)-x(i-1,j) in the j direction.

Terms

    a(0) =50a(1) =1180a(2) =21955a(3) =300131a(4) =3183434a(5) =27910024a(6) =212707851a(7) =1462376991a(8) =9314700106a(9) =56025183452a(10) =322542598187

External references