Number of 6Xn 0..3 arrays with rows unimodal and columns nondecreasing.

A223991

Number of 6Xn 0..3 arrays with rows unimodal and columns nondecreasing.

Terms

    a(0) =84a(1) =7056a(2) =325120a(3) =9647292a(4) =204647416a(5) =3322756326a(6) =43307637038a(7) =469239396496

External references