Number of (n+1)X(n+1) binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum.

A185488

Number of (n+1)X(n+1) binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum.

Terms

    a(0) =0a(1) =128a(2) =5936a(3) =1020072a(4) =512228678a(5) =835833221744

External references