Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically and nw-se diagonally.

A253162

Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock sum differing from its neighbors horizontally, vertically and nw-se diagonally.

Terms

    a(0) =26784a(1) =443362a(2) =7252320a(3) =135741428a(4) =2461955138a(5) =44789509812a(6) =808045500430

External references