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

A210138

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

Terms

    a(0) =105a(1) =4349a(2) =159327a(3) =5451164a(4) =178904077a(5) =5714971168a(6) =179321691502

External references