203762

Appears in sequences

• G.f.: A(x) = Sum_{n>=0} x^n * A(n*x) * A(-n*x).at n=9A210525
• Number of n X 5 binary arrays with top left value 1 and no two ones adjacent horizontally, diagonally or antidiagonally.at n=5A228657
• T(n,k)=Number of nXk binary arrays with top left value 1 and no two ones adjacent horizontally, diagonally or antidiagonally.at n=50A228660
• Number of 6 X n binary arrays with top left value 1 and no two ones adjacent horizontally, diagonally or antidiagonally.at n=4A228665