3221806

Appears in sequences

• T(n,k)=Number of (n*k)Xk binary arrays with nonzero rows in decreasing order, no more than 3 ones in any row and exactly n ones in every column.at n=37A188449
• Number of (2*n)Xn binary arrays with nonzero rows in decreasing order, no more than 3 ones in any row and exactly 2 ones in every column.at n=7A188450