426425

Appears in sequences

• Number of (n+1)X(n+1) 0..4 arrays with diagonal zero and the i,j-th 2X2 subblock sum equal to the j,i-th 2X2 subblock sum.at n=2A187404
• T(n,k)=Number of (n+1)X(n+1) 0..k arrays with diagonal zero and the i,j-th 2X2 subblock sum equal to the j,i-th 2X2 subblock sum.at n=17A187408
• T(n,k) = number of n X n 0..k zero-diagonal arrays with corresponding row and column sums equal.at n=24A229417
• Number of 4X4 0..n zero-diagonal arrays with corresponding row and column sums equal.at n=3A229418