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

A210409

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

Terms

    a(0) =9576a(1) =2574592a(2) =677993552a(3) =178971208720

External references