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

A237153

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

Terms

    a(0) =14096a(1) =762508a(2) =39065788a(3) =2178706440a(4) =122764464080

External references