Number of n X n 0..3 arrays with row sums 18 and column sums 18.

A172726

Number of n X n 0..3 arrays with row sums 18 and column sums 18.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =4662857360

External references