Number of (n+1)X(n+1) 0..2 arrays with the maximum of every 2X2 subblock equal.

A237027

Number of (n+1)X(n+1) 0..2 arrays with the maximum of every 2X2 subblock equal.

Terms

    a(0) =81a(1) =11205a(2) =11703666a(3) =93104881597

External references