Number of (n+1)X4 binary arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.

A185744

Number of (n+1)X4 binary arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.

Terms

    a(0) =40a(1) =544a(2) =4056a(3) =33768a(4) =273928a(5) =2237680a(6) =18242392a(7) =148782184a(8) =1213377952a(9) =9895860408a(10) =80705698992a(11) =658196978784

External references