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

A210407

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

Terms

    a(0) =78a(1) =2520a(2) =80496a(3) =2574592a(4) =82334080a(5) =2633043200a(6) =84204544256

External references