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 min(x(i,j),x(i-1,j)) in the j direction.

A250624

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 min(x(i,j),x(i-1,j)) in the j direction.

Terms

    a(0) =36a(1) =654a(2) =12151a(3) =218680a(4) =3719562a(5) =60472234a(6) =955747123a(7) =14889326715a(8) =230970404064

External references