Number of (n+1)X(2+1) 0..3 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.

A237916

Number of (n+1)X(2+1) 0..3 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.

Terms

    a(0) =1584a(1) =14564a(2) =133528a(3) =1282504a(4) =12149024a(5) =115206520a(6) =1092851528a(7) =10375258140a(8) =98442896216a(9) =934214824740

External references