Number of (n+1)X7 0..3 arrays with every 2X2 subblock having two distinct values, and new values 0..3 introduced in row major order.
A209812
Number of (n+1)X7 0..3 arrays with every 2X2 subblock having two distinct values, and new values 0..3 introduced in row major order.
Terms
- a(0) =29782a(1) =2377378a(2) =201392025a(3) =18479672376
External references
- oeis: A209812