1/128 the number of (n+2)X8 binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

A185990

1/128 the number of (n+2)X8 binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

Terms

    a(0) =4838a(1) =462288a(2) =24122605a(3) =1458949494a(4) =86146689788

External references