Number of (n+1)X9 binary arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.

A185749

Number of (n+1)X9 binary arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.

Terms

    a(0) =7528a(1) =1494072a(2) =148782184a(3) =16318664224

External references