Number of (n+1)X4 0..3 arrays with every 2X2 subblock having two or four distinct values, and new values 0..3 introduced in row major order.
A210120
Number of (n+1)X4 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) =265a(1) =5587a(2) =122093a(3) =2737637a(4) =62169169a(5) =1421103679a(6) =32591746591a(7) =748700150743
External references
- oeis: A210120