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

A237206

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

Terms

    a(0) =5130a(1) =59386a(2) =655186a(3) =8448682a(4) =107553623a(5) =1448414238a(6) =19305898426a(7) =264733943408

External references