Number of nX5 0..2 arrays with no more than floor(nX5/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order.

A223147

Number of nX5 0..2 arrays with no more than floor(nX5/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..2 order.

Terms

    a(0) =24a(1) =990a(2) =23376a(3) =1753639a(4) =35160014a(5) =2829178640a(6) =57855419616

External references