Number of n X n 0..3 arrays with row sums 13 and column sums 13.

A172731

Number of n X n 0..3 arrays with row sums 13 and column sums 13.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =6210a(5) =20592419760

External references