Number of (n+1)X3 0..3 arrays containing all values 0..3 with every 2X2 subblock having two or three distinct values, and new values 0..3 introduced in row major order.

A210314

Number of (n+1)X3 0..3 arrays containing all values 0..3 with every 2X2 subblock having two or three distinct values, and new values 0..3 introduced in row major order.

Terms

    a(0) =35a(1) =4125a(2) =279526a(3) =16048775a(4) =863174816a(5) =45102170733

External references