Number of nX4 0..3 arrays with no occurrence of three equal elements in a row horizontally or vertically, and new values 0..3 introduced in row major order.
A205306
Number of nX4 0..3 arrays with no occurrence of three equal elements in a row horizontally or vertically, and new values 0..3 introduced in row major order.
Terms
- a(0) =12a(1) =2191a(2) =381958a(3) =70985206a(4) =13049279920
External references
- oeis: A205306