1/8192 the number of (n+2)X5 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

A186549

1/8192 the number of (n+2)X5 0..3 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace.

Terms

    a(0) =2972a(1) =1279862a(2) =177942264a(3) =31976088817

External references