Number of nX7 0..3 arrays with no more than floor(nX7/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

A222877

Number of nX7 0..3 arrays with no more than floor(nX7/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.