Number of 4X4 nonnegative integer matrices with row and column i=1..4 having sum <= i*n.

A214013

Number of 4X4 nonnegative integer matrices with row and column i=1..4 having sum <= i*n.

Terms

    a(0) =24950a(1) =9318805a(2) =641631566a(3) =17609835599a(4) =269462676001

External references