Number of (6+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

A250697

Number of (6+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.

Terms

    a(0) =233300a(1) =1647460a(2) =8474002a(3) =36673634a(4) =143136866a(5) =523260542a(6) =1832718604a(7) =6241479780a(8) =20880237460a(9) =69123618848a(10) =227638279630a(11) =748479312062

External references