Number of (n+1)X6 0..2 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.

A185841

Number of (n+1)X6 0..2 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.

Terms

    a(0) =12609a(1) =2506851a(2) =254648349a(3) =29306445165

External references