Number of (n+1)X(7+1) 0..3 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.

A234160

Number of (n+1)X(7+1) 0..3 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.

Terms

    a(0) =649450a(1) =193116778a(2) =57647946980

External references