Number of (n+1) X (3+1) 0..4 arrays with every 2 X 2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.

A234031

Number of (n+1) X (3+1) 0..4 arrays with every 2 X 2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.

Terms

    a(0) =1543a(1) =30263a(2) =591711a(3) =11637549a(4) =229271097a(5) =4522455227a(6) =89286112307

External references