Number of (n+1)X(4+1) 0..3 arrays with the maximum plus the minimum of every 2X2 subblock equal.

A237154

Number of (n+1)X(4+1) 0..3 arrays with the maximum plus the minimum of every 2X2 subblock equal.

Terms

    a(0) =111900a(1) =16547988a(2) =2178706440a(3) =317411030268

External references