Number of 7Xn 0..3 arrays with rows unimodal and columns nondecreasing.

A223992

Number of 7Xn 0..3 arrays with rows unimodal and columns nondecreasing.

Terms

    a(0) =120a(1) =14400a(2) =922768a(3) =37395816a(4) =1067023886a(5) =22985966340a(6) =392525216516

External references