Number of n X n 0..3 arrays with row sums 12 and column sums 12.

A172732

Number of n X n 0..3 arrays with row sums 12 and column sums 12.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =1a(4) =153040a(5) =210668680701

External references