Number of (n+1)X(6+1) 0..3 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock equal.

A237209

Number of (n+1)X(6+1) 0..3 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock equal.

Terms

    a(0) =581660a(1) =31758656a(2) =1448414238a(3) =89734494932

External references