Number of (n+1)X4 0..2 arrays with every 2X2 subblock having the same number of equal edges, and new values 0..2 introduced in row major order.

A205470

Number of (n+1)X4 0..2 arrays with every 2X2 subblock having the same number of equal edges, and new values 0..2 introduced in row major order.

Terms

    a(0) =175a(1) =1548a(2) =14639a(3) =147129a(4) =1504556a(5) =15614579a(6) =162976758a(7) =1709130780a(8) =17963198743a(9) =189127385194

External references