1/128 the number of (n+2)X(n+2) binary arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace.

A185857

1/128 the number of (n+2)X(n+2) binary arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace.

Terms

    a(0) =4a(1) =164a(2) =13662a(3) =2306566a(4) =791291609a(5) =573531587857

External references