Number of nX4 0..5 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..5 introduced in row major order.
A209740
Number of nX4 0..5 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..5 introduced in row major order.
Terms
- a(0) =15a(1) =700a(2) =103373a(3) =20611956a(4) =4474325828a(5) =991613495404
External references
- oeis: A209740