Number of (n+1)X5 0..3 arrays with every 2X2 subblock having two or four distinct values, and new values 0..3 introduced in row major order.

A210121

Number of (n+1)X5 0..3 arrays with every 2X2 subblock having two or four distinct values, and new values 0..3 introduced in row major order.

Terms

    a(0) =1702a(1) =67585a(2) =2737637a(3) =112952832a(4) =4697571356a(5) =196165653701

External references