Number of n X n 0..6 arrays with row sums 6 and column sums 6.

A172894

Number of n X n 0..6 arrays with row sums 6 and column sums 6.

Terms

    a(0) =1a(1) =1a(2) =7a(3) =406a(4) =132724a(5) =164176640a(6) =602351808741

External references