Number of 2n X 4 0..4 arrays with values 0..4 introduced in row major order and each element equal to an even number of horizontal and vertical neighbors.
A198536
Number of 2n X 4 0..4 arrays with values 0..4 introduced in row major order and each element equal to an even number of horizontal and vertical neighbors.
Terms
- a(0) =404a(1) =7937268a(2) =163506788110
External references
- oeis: A198536