Number of n X n 0..6 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..6 introduced in row major order.
A209458
Number of n X n 0..6 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..6 introduced in row major order.
Terms
- a(0) =1a(1) =6a(2) =2027a(3) =26142922
External references
- oeis: A209458