Number of n X 6 0..2 arrays with exactly floor((n X 6)/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.

A223102

Number of n X 6 0..2 arrays with exactly floor((n X 6)/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order.