Number of (n+1)X4 0..3 arrays with every 2X2 subblock having one, three or four distinct values, and new values 0..3 introduced in row major order.

A210129

Number of (n+1)X4 0..3 arrays with every 2X2 subblock having one, three or four distinct values, and new values 0..3 introduced in row major order.

Terms

    a(0) =897a(1) =84381a(2) =7873809a(3) =735336694a(4) =68668190865

External references